<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 5 Apr 2016, at 20:54, Dave Abrahams 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=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">IMO this:</span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""> (-9...0).reverse()</span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">is better than<span class="Apple-converted-space"> </span></span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""> stride(from: 0, to: -10, by: -1)</span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">What do you think?</span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">--<span class="Apple-converted-space"> </span></span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: -webkit-standard; font-size: inherit; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Dave</span><br style="font-family: -webkit-standard; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote><br class=""></div><div>Are we absolutely certain that an operator could not be found such that (I use `<` and `>` here for illustrative purposes only):</div><div><br class=""></div><div><div class=""><div class=""><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro';"><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);">for</span> i <span class="" style="color: rgb(200, 172, 229);">in</span> <span class="" style="color: rgb(255, 38, 0);">1</span>...<span class="" style="color: rgb(255, 38, 0);">5</span> <span class="" style="color: rgb(145, 84, 15);">></span> <span class="" style="color: rgb(255, 38, 0);">2</span> {</div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro'; color: rgb(203, 203, 203);"><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(0, 0, 0);">i </span>// 1, 3, 5</div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro';"><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span>}</div></div></div><div class=""><br class=""></div><div class=""><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro';"><span class="" style="color: rgb(200, 172, 229);"> for</span> i <span class="" style="color: rgb(200, 172, 229);">in</span> <span class="" style="color: rgb(255, 38, 0);">1</span>...<span class="" style="color: rgb(255, 38, 0);">5</span> <span class="" style="color: rgb(145, 84, 15);"><</span> <span class="" style="color: rgb(255, 38, 0);">2</span> {</div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro'; color: rgb(203, 203, 203);"><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(0, 0, 0);">i </span>// 5, 3, 1</div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; font-family: 'Source Code Pro';"><span class="" style="color: rgb(200, 172, 229);"> </span><span class="" style="color: rgb(200, 172, 229);"> </span>}</div><div class=""><br class=""></div></div></div>milos</body></html>