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.error { color:#AA0000; }</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="bloop_markdown"><p>What are you proposing here, I don’t get it?! What role should <code>.Protocol</code> play? <code>.Protocol</code> is an ugly hack in Swift which should be removed anyway. It does more harm than good.</p>
<p>Our revised proposal was deferred from Swift 4:</p>
<p><a href="https://github.com/DevAndArtist/swift-evolution/blob/refactor_existential_metatypes/proposals/0126-refactor-metatypes.md">https://github.com/DevAndArtist/swift-evolution/blob/refactor_existential_metatypes/proposals/0126-refactor-metatypes.md</a></p>
<p></p></div><div class="bloop_original_html"><style>body{font-family:Helvetica,Arial;font-size:13px}</style><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <br> <div id="bloop_sign_1498869887980018176" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">-- <br>Adrian Zubarev<br>Sent with Airmail</div></div> <br><p class="airmail_on">Am 1. Juli 2017 um 01:55:47, Daryle Walker via swift-evolution (<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div></div><div>
<title></title>
<div class="">We have</div>
<div class=""><br class=""></div>
<div class="">MyType.Type</div>
<div class=""><br class=""></div>
<div class="">to indicate the meta-type of a type. And</div>
<div class=""><br class=""></div>
<div class="">MyProtocol.Protocol</div>
<div class=""><br class=""></div>
<div class="">to indicate the meta-type of a protocol. Would it be
OK to add</div>
<div class=""><br class=""></div>
<div class="">MyType.Protocol</div>
<div class=""><br class=""></div>
<div class="">to identify all the protocols MyType follows? The
result would be like if each protocol was connected by “&”, or
“Any” if the type doesn’t follow any protocols.</div>
<div class=""><br class=""></div>
<div class="">…</div>
<div class=""><br class=""></div>
<div class="">Woah, I realized that this could be a bigger than
anticipated. A type can specify its protocols directly, or through
extension(s). Heck, I do that in my Cocoa projects to segregate
each aspect of a class. So I guess we have to allow the protocol
list to include those imported via extensions.</div>
<div class=""><br class=""></div>
<div class="">…</div>
<div class=""><br class=""></div>
<div class="">Why do I want to do this? It’s part of my
retype/strong-typedef/alternate-interface idea. I originally made
the developer list each protocol to re-implment separately in the
export list and the protocol list. But that would be tedious for a
long list of protocols. So I’m thinking “why not have a way to
specify all of the protocols at once.” But I’m not sure on the
syntax, that’s why I’m asking here. Alternatives could be things
like “#protocolof(MyType)”. Unless we already have this
capability?…</div>
<div class=""><br class=""></div>
<div class="">(Having a retype that repeats all of the
implementation type’s protocols is still useful. The types would
have the same interface, but still don’t share function
overloads.)</div>
<br class="">
<div class="">
<div style="color: rgb(0, 0, 0); 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; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<div class="">— </div>
<div class="">Daryle Walker<br class="">
Mac, Internet, and Video Game Junkie<br class="">
darylew AT mac DOT com </div>
</div>
</div>
<br class="">
_______________________________________________<br>swift-evolution mailing list<br>swift-evolution@swift.org<br>https://lists.swift.org/mailman/listinfo/swift-evolution<br></div></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>