<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="">Let’s use some code to illustrate things. </div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// FooUtilities.swift</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">//</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// -module-name=Foo</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// module Foo {</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// Defines Foo.Utilities</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">module Utilities {</span></div><div style="margin: 0px; font-size: 11px; 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: #ba2da2" class="">internal</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">func</span><span style="font-variant-ligatures: no-common-ligatures" class=""> visibleInThisSubmodule() {}</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">//}</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// FooUtilities+MoreUtilities.swift</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(186, 45, 162);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">extension</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> Foo.</span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Utilities</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> {</span></div><div style="margin: 0px; font-size: 11px; 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: #ba2da2" class="">private</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">func</span><span style="font-variant-ligatures: no-common-ligatures" class=""> privateHelper() {</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> visibleInThisSubmodule()</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 21, 2017, at 10:31 PM, Xiaodi Wu <<a href="mailto:xiaodi.wu@gmail.com" class="">xiaodi.wu@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">On Tue, Feb 21, 2017 at 9:29 PM, Robert Widmann <span dir="ltr" class=""><<a href="mailto:devteam.codafi@gmail.com" target="_blank" class="">devteam.codafi@gmail.com</a>></span> wrote:<br class=""><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class=""><div class="">Once again, internal is your keyword. An extension allows you to “open and expand” the module boundary here, which is exactly what you want here - to extend this module across file boundaries without showing your cards to an external consumer of your framework. </div></div></blockquote><div class=""><br class=""></div><div class="">Sorry, I don't understand. Does your design support the use case below? I don't think it does. Are you replying that supporting the use case below is not a goal of your proposal? If so, please just say so.</div><div class=""><br class=""></div><div class=""><br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class=""><div class=""><div class="h5"><div class=""><blockquote type="cite" class=""><div class="">On Feb 21, 2017, at 10:26 PM, Xiaodi Wu <<a href="mailto:xiaodi.wu@gmail.com" target="_blank" class="">xiaodi.wu@gmail.com</a>> wrote:</div><br class="m_-6709346236215180382Apple-interchange-newline"><div class=""><div dir="ltr" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" class="">On Tue, Feb 21, 2017 at 9:08 PM, Robert Widmann via swift-evolution<span class="m_-6709346236215180382Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:swift-evolution@swift.org" target="_blank" class="">swift-<wbr class="">evolution@swift.org</a>></span><span class="m_-6709346236215180382Apple-converted-space"> </span>wrote:<br class=""><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Sorry, been replying to multiple sub-threads today.<br class=""><br class=""><br class="">For bar(), because you wish to be able to<br class=""><br class="">1) Not export it across the outermost module boundary<br class="">2) But still use it internally<br class=""><br class="">Internal access is required. Any higher and you would export (violating 1), any lower and you wouldn’t be able to internally import (violating 2).<br class=""><br class="">For baz(), because you wish to be able to<br class=""><br class="">1) Not export it across the outermost module boundary,<br class="">2) Or even your own internal submodule boundary<br class=""></blockquote><div class=""> </div><div class="">3) But still use it within the same submodule, across different file boundaries: this is the feature that many people have stated they want to emerge out of a submodule design.</div><div class=""><br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Private or fileprivate suffices depending on the scoping you wish for it to have within the file/interface it’s a part of relative to the other APIs in the submodule.<br class=""><div class="m_-6709346236215180382HOEnZb"><div class="m_-6709346236215180382h5"><br class="">> On Feb 21, 2017, at 10:04 PM, Brent Royal-Gordon <<a href="mailto:brent@architechies.com" target="_blank" class="">brent@architechies.com</a>> wrote:<br class="">><br class="">> I specified two different behaviors for `bar()` and `baz()`. I see now that you describe `internal` as having the behavior I want for `bar()`. Is there a way I can get the behavior I want for `baz()`?<br class="">><br class="">> --<br class="">> Brent Royal-Gordon<br class="">> Sent from my iPhone<br class="">><br class="">> On Feb 21, 2017, at 6:51 PM, Robert Widmann <<a href="mailto:devteam.codafi@gmail.com" target="_blank" class="">devteam.codafi@gmail.com</a>> wrote:<br class="">><br class="">>>> What access modifiers do I put on `bar()` and `baz()` so that `MyMod` can access `bar()` but not `baz()`, and code outside `MyMod` can access neither `bar()` nor `baz()`?<br class="">>>><br class="">>><br class="">>> internal<br class=""><br class="">______________________________<wbr class="">_________________<br class="">swift-evolution mailing list<br class=""><a href="mailto:swift-evolution@swift.org" target="_blank" class="">swift-evolution@swift.org</a><br class=""><a href="https://lists.swift.org/mailman/listinfo/swift-evolution" rel="noreferrer" target="_blank" class="">https://lists.swift.org/mailma<wbr class="">n/listinfo/swift-evolution</a></div></div></blockquote></div></div></div></div></blockquote></div><br class=""></div></div></div></blockquote></div><br class=""></div></div>
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