<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=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 9, 2017, at 8:16 AM, Adrian Zubarev <<a href="mailto:adrian.zubarev@devandartist.com" class="">adrian.zubarev@devandartist.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><style class="">
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.error { color:#AA0000; }</style><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="bloop_markdown"><p class="">Easy: <code class="">class SomeClass : Equatable {</code></p><div class=""><br class=""></div></div></div></div></blockquote>Doh!!</div><div><br class=""></div><div>thank you.</div><div><br class=""><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="bloop_markdown"><div class=""><br class="webkit-block-placeholder"></div></div><div class="bloop_original_html"><style class="">body{font-family:Helvetica,Arial;font-size:13px}</style><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; margin: 0px;" class=""><br class=""></div> <div id="bloop_sign_1499613359376552960" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px" class="">-- <br class="">Adrian Zubarev<br class="">Sent with Airmail</div></div> <br class=""><p class="airmail_on">Am 9. Juli 2017 um 17:11:14, David Baraff via swift-users (<a href="mailto:swift-users@swift.org" class="">swift-users@swift.org</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""></div><div class="">
<title class=""></title>
Given 2-tuples of type (T1, T2), you should be able to invoke the
== operator if you could on both types T1 and T2, right? i.e.
<div class=""><br class=""></div>
<div class="">(“abc”, 3) == (“abc”, 4) // legal</div>
<div class=""><br class=""></div>
<div class="">but:</div>
<div class=""><br class=""></div>
<div class="">
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">class SomeClass {</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=""> static public func ==(_
lhs:</span><span style="font-variant-ligatures: no-common-ligatures; color: #9f35da" class="">SomeClass</span><span style="font-variant-ligatures: no-common-ligatures" class="">, _
rhs:</span><span style="font-variant-ligatures: no-common-ligatures; color: #9f35da" class="">SomeClass</span><span style="font-variant-ligatures: no-common-ligatures" class="">)
-></span> <span style="font-variant-ligatures: no-common-ligatures; color: #3495af" class="">Bool</span> <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=""> return lhs ===
rhs</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 style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">let c1 =</span> <span style="font-variant-ligatures: no-common-ligatures; color: #9f35da" class="">SomeClass</span><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="">let c2 =</span> <span style="font-variant-ligatures: no-common-ligatures; color: #9f35da" class="">SomeClass</span><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=""><br class=""></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">let t1 = (</span><span style="font-variant-ligatures: no-common-ligatures; color: #b4261a" class="">"abc"</span><span style="font-variant-ligatures: no-common-ligatures" class="">,</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #0536ff" class="">c1</span><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="">let t2 = (</span><span style="font-variant-ligatures: no-common-ligatures; color: #b4261a" class="">"abc"</span><span style="font-variant-ligatures: no-common-ligatures" class="">,</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #0536ff" class="">c2</span><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=""><br class=""></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(5, 54, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">c1</span> <span style="font-variant-ligatures: no-common-ligatures; color: #9f35da" class="">==</span> <span style="font-variant-ligatures: no-common-ligatures" class="">c2 //
legal</span></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #0536ff" class="">t1</span> <span style="font-variant-ligatures: no-common-ligatures" class="">==</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #0536ff" class="">t2 // illegal</span></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #0536ff" class=""><br class=""></span></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div>
</div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div>
<div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div>
<div style="margin: 0px; line-height: normal; min-height: 13px;" class="">Why is t1 == t2 not legal given that c1 == c2 IS
legal?</div>
<div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><br class=""></div>
<div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><br class=""></div>
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