<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi Erica</div><div class=""><br class=""></div><div class="">That would also be a workable solution, but imho still too tedious as </div><div class="">it has been so for many years, with nested iteration statements…</div><div class="">many times this is for;; for;; for tables and for;;for;;for;; for 3D structuring.</div><div class=""><span style="color: rgb(49, 89, 93); font-family: Menlo; font-size: 16px;" class=""> </span></div><div class=""><br class=""></div><div class="">Swift offers nice features (like protocols and generics as you know) to improve this. </div><div class=""><br class=""></div><div class="">- I no longer have to nest for;; s so, Now I rather do this: </div><div class="">Your example can already be coded like this:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #31595d" class=""> iterate2D</span><span style="font-variant-ligatures: no-common-ligatures" class="">( </span><span style="font-variant-ligatures: no-common-ligatures;" class="">1, 2</span><span style="font-variant-ligatures: no-common-ligatures;" class="">, { $0 < 64 } ,</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> 1, 2</span><span style="font-variant-ligatures: no-common-ligatures;" class="">, { $0 < 64 } ,</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""> {outerIndex,innerIndex in</div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> print (outerIndex,InnerIndex)</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);" class="">return</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);" class="">true // Obligatory. return “false" to break</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> } )</span></div></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class="">With no chances in Swift, this already works like a charm!</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class="">Imho much more readable and compact,</span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; line-height: normal;" class="">Uses - AFAICS from a programmers’s perspective - no </div><div style="margin: 0px; line-height: normal;" class="">underlying deep collection based coding with Sequence. etc.</div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class="">I am already deploying it in my own apps e.g. l</span></div><div style="margin: 0px; line-height: normal;" class="">(replaced for;; for;; for;; in the app) </div><div style="margin: 0px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">By using this new iterator…() functions my coding gets leaner </div><div style="margin: 0px; line-height: normal;" class="">and errors are easier to spot. </div><div style="margin: 0px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">Actual working code with Swift 2.x here: </div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; line-height: normal;" class=""><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">func</span><span style="font-variant-ligatures: no-common-ligatures" class=""> generateTiles()</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> {</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> w: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">20</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #008400" class="">// tile size</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> h: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">5</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> l: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">5</span></div><p style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal; min-height: 19px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><br class="webkit-block-placeholder"></p><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> xstart: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = -</span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">120</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> ystart: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = -</span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">60</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> zstart: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = -</span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">10</span></div><p style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal; min-height: 19px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><br class="webkit-block-placeholder"></p><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> xend: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">120</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> yend: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">60</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> zend: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">10</span></div><p style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal; min-height: 19px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><br class="webkit-block-placeholder"></p><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> tolerance:</span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Float</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">0.001</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span><span style="font-variant-ligatures: no-common-ligatures" class="">// float drift compensation</span></div><p style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal; min-height: 19px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><br class="webkit-block-placeholder"></p><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #31595d" class="">iterate3D</span><span style="font-variant-ligatures: no-common-ligatures" class="">( xstart, w * </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">1.2</span><span style="font-variant-ligatures: no-common-ligatures" class="">, { $0 < xend + tolerance } ,</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> ystart, h * </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">1.2</span><span style="font-variant-ligatures: no-common-ligatures" class="">, { $0 < yend + tolerance } ,</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> zstart, l * </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">1.2</span><span style="font-variant-ligatures: no-common-ligatures" class="">, { $0 < zend + tolerance } ,</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> {</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> x,y,z </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">in</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">self</span><span style="font-variant-ligatures: no-common-ligatures" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #31595d" class="">addTile</span><span style="font-variant-ligatures: no-common-ligatures" class="">(x,y,z, </span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> w,h,l)</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">return</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">true</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> } )</span></div><div style="font-family: Menlo; font-size: 16px; margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="font-family: Menlo; font-size: 16px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="font-family: Menlo; font-size: 16px;" class=""><span style="font-family: Helvetica; font-size: 14px;" class="">This generates a group of blocks or tiles in my Apple TV app (under construction)</span></div><div class="">like the one you can see in the image “Cloinckz” on my website <a href="http://www.tedvg.com" class="">www.tedvg.com</a>.</div><div class=""><br class=""></div><div class="">I also prefer the one dimensional iterate(.. too above the for;; or stride()</div><div class=""><br class=""></div><div class="">One could extend these iterator…() functions by adding closures for pre and post iteration handling,</div><div class="">like for printing headers and footers before and/or after a complete [inner] iteration.</div><div class=""><br class=""></div><div class="">Note that breaking with *return false* -which is equivalent to the “break” stmt in</div><div class="">a classical for;; - does not only leave a nested iteration, but also the outer ones.</div><div class="">(maybe a TODO to make individual level- break possible) As it is now, If one </div><div class="">wants to break at the deep iteration level, then one should nest this using 1D iterators.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Anyway, this is just a thought starting to think about multi-dimensional iterators,</div><div class="">and other (encapsulation?) of multi dimensional data as well.</div><div class="">In any case for 2D because table data is used very frequently in many apps. as</div><div class="">most data are in tables.</div><div class=""><br class=""></div><div class=""><div class="">You won’t believe this :o) but in a sense I might not make so much fuzz anymore</div><div class="">to keep the for;; as this proves to me that I can solve things much better that I thought.</div></div><div class="">So, I have to rethink this.</div><div class=""><br class=""></div><div class="">Kind Regards</div><div class="">Ted </div></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""><a href="http://www.ravelnotes.com" class="">www.ravelnotes.com</a></span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;" class=""><span style="font-family: Helvetica; font-size: 14px;" class=""> </span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On 31.07.2016, at 18:33, Erica Sadun <<a href="mailto:erica@ericasadun.com" class="">erica@ericasadun.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">I'm replying on Swift-Users and bcc'ing in Swift-Evolution to comply with the core team's request to focus SE on the current mission statement. </div><div class=""><br class=""></div><div class="">At some point soon, Russ Bishop's PR <a href="https://github.com/apple/swift/pull/3600" class="">https://github.com/apple/swift/pull/3600</a> will be incorporated into Swift 3. This PR adds `prefix(while:)` and `drop(while:)` to finish implementing SE-0045. Once that's done, you can combine `sequence(first:, next:)` and `prefix(while:)` to into a single function `sequence(first:, next:, while:)` like this:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Menlo" class="">public func sequence<T>(first: T, next: (T) -> T?, while test: (T) -> Bool) -> UnfoldSequence<T, UnfoldSequence<T, (T?, Bool)>> {</font></div><div class=""><font face="Menlo" class=""> return sequence(first: first, next: next).prefix(while: test)</font></div><div class=""><font face="Menlo" class="">}</font></div><div class=""><br class=""></div><div class="">The combined sequence/prefix call allows you to create loops like this:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Menlo" class="">for outerIndex in sequence(first: 1, next: { $0 * 2 }, while: { $0 <= 64 }) {</font></div><div class=""><font face="Menlo" class=""> for innerIndex in sequence(first: 1, next: { $0 * 2 }, while: { $0 <= 64 }) {</font></div><div class=""><font face="Menlo" class=""> print(outerIndex, innerIndex)</font></div><div class=""><font face="Menlo" class=""> }</font></div><div class=""><font face="Menlo" class="">}</font></div></div></div><div class=""><br class=""></div><div class="">These loops can be nested. break and continue work. You can use tuples for multiple arguments. While I'd like to see a combined form adopted into Swift 4b (the deferred "sugar"), it isn't a high priority.</div><div class=""><br class=""></div><div class="">-- E</div><div class=""><br class=""></div><br class=""><div class=""><blockquote type="cite" class=""><div class="">On Jul 31, 2016, at 7:18 AM, Ted F.A. van Gaalen via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On 31.07.2016, at 04:28, <a href="mailto:jaden.geller@gmail.com" class="">jaden.geller@gmail.com</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class=""><div class=""></div><div class="">What benefit do Iterator2D and Iterator3D provide that nesting does not?</div></div></div></blockquote>Hi Jaden,</div><div class="">well, simply because of hiding/enclosing repetitive functionality</div><div class="">like with every other programming element is convenient,</div><div class="">prevents errors and from writing the same over and over again.</div><div class="">That is why there are functions.</div><div class="">but you already know that, of course.</div><div class="">Kind Regards</div><div class="">TedvG</div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div class=""><div dir="auto" class=""><div class=""><br class="">On Jul 30, 2016, at 1:48 PM, Ted F.A. van Gaalen via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""><br class=""></div><blockquote type="cite" class=""><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class="">Hi Chris,<div class=""><br class=""><div class="">thanks for the tip about Hirundo app!</div></div><div class=""><br class=""></div><div class=""><div class="">A positive side-effect of removing the classical for;; loop</div><div class=""> (yes, it’s me saying this :o) is that it forces me to find</div><div class="">a good and generic equivalent for it, </div><div class="">making the conversion of my for;;s to 3.0 easier.</div><div class="">which is *not* based on collections or sequences and</div><div class="">does not rely on deeper calls to Sequence etc.</div><div class=""><br class=""></div><div class="">so, I’ve made the functions [iterator, iterator2D, iterator3D] (hereunder)</div><div class="">wich btw clearly demonstrate the power and flexibility of Swift. </div><div class=""><br class=""></div><div class="">Very straightforward, and efficient (i assume) just like the classical for;; loop. </div><div class="">It works quite well in my sources.</div><div class=""><br class=""></div></div><div class="">As a spin-off, I’ve extended these to iterators for matrices 2D and cubes? 3D...</div><div class=""><br class=""></div><div class="">Question: </div><div class="">Perhaps implementing “multi dimensional iterator functions</div><div class="">in Swift might be a good idea. so that is no longer necessary to nest/nest/nest iterators. </div><div class=""><br class=""></div><div class="">Met vriendelijke groeten, sorry for my “intensity” in discussing the classical for;; </div><div class="">I'll have to rethink this for;; again.. </div><div class="">Thanks, Ted.</div><div class=""><br class=""></div><div class="">Any remarks ( all ), suggestions about the code hereunder: ? </div><div class=""><br class=""></div><div class=""><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">protocol</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> NumericType</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">{</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> +(lhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, rhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Self</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> -(lhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, rhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Self</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> *(lhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, rhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Self</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> /(lhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, rhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Self</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> %(lhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, rhs: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">Self</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Self</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">}</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Double</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Float</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">CGFloat</span><span class="" style="font-variant-ligatures: no-common-ligatures;">: </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Int</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Int8</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Int16</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Int32</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Int64</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">UInt</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">UInt8</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">UInt16</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">UInt32</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135);"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">extension</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">UInt64</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> : </span><span class="" style="font-variant-ligatures: no-common-ligatures;">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> { }</span></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;"><br class=""></span></div></div><div class=""><br class=""></div><div class=""><div class=""><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// Simple iterator with generic parameters, with just a few lines of code.</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);">/// for most numeric types (see above)</div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// Usage Example:</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">///</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// iterate(xmax, { $0 > xmin}, -xstep,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// {x in</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// print("x = \(x)")</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// return true // returning false acts like a break</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// } )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">///</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// -Parameter vstart: Initial value</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// -Parameter step: The iteration stepping value.</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// -Parameter test: A block with iteration test. e.g. {$0 > 10}</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">///</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// -Parameter block: A block to be executed with each step.</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// The block must include a return true (acts like "continue")</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// or false (acts like "break")</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><div class="" style="margin: 0px; line-height: normal;"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// -Please Note: </span></div><div class="" style="margin: 0px; line-height: normal;"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// There is minor precision loss ca: 1/1000 ... 1/500 </span></div><div class="" style="margin: 0px; line-height: normal;"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// when iterating with floating point numbers.</span></div><div class="" style="margin: 0px; line-height: normal;"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// However, in most cases this can be safely ignored.</span></div><div class="" style="margin: 0px; line-height: normal;"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// made by ted van gaalen.</span></div><div class="" style="margin: 0px; line-height: normal;"><br class=""></div><div class="" style="margin: 0px; line-height: normal;"><br class=""></div></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> iterate<T:</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;">> (</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> vstart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> vstep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> test: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> block: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">{</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> current = vstart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> test(current) && block(current)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> current = current </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> vstep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">}</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// X,Y 2D matrix (table) iterator with generic parameters</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> iterate2D<T:</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;">> (</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xtest: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ytest: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> block: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">{</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xcurrent = xstart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ystart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> dontStop = </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xtest(xcurrent) && dontStop</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ystart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ytest(ycurrent) && dontStop</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> dontStop = block(xcurrent, ycurrent)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ycurrent </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> xcurrent = xcurrent </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">}</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;">/// X,Y,Z 3D (cubic) iterator with generic parameters:</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> iterate3D<T:</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">NumericType</span><span class="" style="font-variant-ligatures: no-common-ligatures;">> (</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xtest: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ytest: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> zstart: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> zstep: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ztest: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">_</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> block: (</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">,</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(79, 129, 135);">T</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) -> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">Bool</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">{</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xcurrent = xstart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ystart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> zcurrent = zstart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">var</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> dontStop = </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xtest(xcurrent) && dontStop</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ystart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ytest(ycurrent) && dontStop</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> zcurrent = zstart</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">while</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ztest(zcurrent) && dontStop</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> dontStop = block(xcurrent, ycurrent, zcurrent)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> zcurrent = zcurrent </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> zstep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> ycurrent = ycurrent </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ystep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> xcurrent = xcurrent </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">+</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> xstep</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">}</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">func</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> testIterator()</span><span class="" style="font-variant-ligatures: no-common-ligatures;"></span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">{</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">iterate</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.5</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, {$0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">1000.00000</span><span class="" style="font-variant-ligatures: no-common-ligatures;">} ,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> { value </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">in</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(61, 29, 129);">print</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">"Value = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">value</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">) </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">"</span><span class="" style="font-variant-ligatures: no-common-ligatures;">)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">return</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> } )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">let</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> startv: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">CGFloat</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> = -</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">20.0</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">let</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> stepv: </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(112, 61, 170);">CGFloat</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> = </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.5</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">iterate</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(startv, stepv, {$0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">1000.00000</span><span class="" style="font-variant-ligatures: no-common-ligatures;">} ,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> { val </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">in</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(61, 29, 129);">print</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">"R = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">val</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">)"</span><span class="" style="font-variant-ligatures: no-common-ligatures;">)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">return</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> } )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">let</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> tolerance = </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.01</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="color: rgb(0, 132, 0); font-variant-ligatures: no-common-ligatures;">// boundary tolerance for floating point type</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">iterate2D</span><span class="" style="font-variant-ligatures: no-common-ligatures;">( </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">10.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, { $0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">100.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> + tolerance } ,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">5.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, { $0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">50.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> + tolerance } ,</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {x,y </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">in</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(61, 29, 129);">print</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">"x = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">x</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">) y = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">y</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">)"</span><span class="" style="font-variant-ligatures: no-common-ligatures;">)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">return</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures;">// false from block stops iterating ( like break)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> } )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(49, 89, 93);">iterate3D</span><span class="" style="font-variant-ligatures: no-common-ligatures;">( </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">10.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, { $0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">30.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> } , </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(0, 132, 0);">// x</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">5.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, { $0 < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">20.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> } , </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(0, 132, 0);">// y</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">10.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, -</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">5.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;">, { $0 > -</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">10.0</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> } , </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(0, 132, 0);">// z</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {x,y,z </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">in</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(61, 29, 129);">print</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">"x = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">x</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">) y = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">y</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">) z = </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">z</span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(209, 47, 27);">)"</span><span class="" style="font-variant-ligatures: no-common-ligatures;">)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">if</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> z < </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(39, 42, 216);">0.0</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> {</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(209, 47, 27);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(61, 29, 129);">print</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> ( </span><span class="" style="font-variant-ligatures: no-common-ligatures;">"** z value </span><span class="" style="font-variant-ligatures: no-common-ligatures;">\</span><span class="" style="font-variant-ligatures: no-common-ligatures;">(</span><span class="" style="font-variant-ligatures: no-common-ligatures;">z</span><span class="" style="font-variant-ligatures: no-common-ligatures;">) is below zero! **"</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> )</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">return</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">false</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures;">// (acts as break in for;;)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> }</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);"><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">return</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(187, 44, 162);">true</span><span class="" style="font-variant-ligatures: no-common-ligatures;"> </span><span class="" style="font-variant-ligatures: no-common-ligatures;">// return stmt is obligatory (continue)</span></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"> } )</div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;">}</div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-size: 16px; line-height: normal; font-family: Menlo; min-height: 19px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div></div><div class=""><br class=""></div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div></blockquote><blockquote type="cite" class=""><div class=""><span class="">_______________________________________________</span><br class=""><span class="">swift-evolution mailing list</span><br class=""><span class=""><a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a></span><br class=""><span class=""><a href="https://lists.swift.org/mailman/listinfo/swift-evolution" class="">https://lists.swift.org/mailman/listinfo/swift-evolution</a></span><br class=""></div></blockquote></div></div></blockquote></div><br class=""></div>_______________________________________________<br class="">swift-evolution mailing list<br class=""><a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a><br class=""><a href="https://lists.swift.org/mailman/listinfo/swift-evolution" class="">https://lists.swift.org/mailman/listinfo/swift-evolution</a><br class=""></div></blockquote></div><br class=""></div></div></blockquote></div><br class=""></body></html>