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.send { color:#77bb77; }
.server { color:#7799bb; }
.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>Thanks, that works party as needed but I just realize this main idea here is exactly an example where one would need generic protocols, because I cannot overload the function with <code>associatedtype</code> as I’d need it.</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_1480696071192867072" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">--&nbsp;<br>Adrian Zubarev<br>Sent with Airmail</div></div> <br><p class="airmail_on">Am 2. Dezember 2016 um 13:33:37, Tino Heth (<a href="mailto:2th@gmx.de">2th@gmx.de</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><br class="">
<blockquote type="cite" class="">
<div class=""><span style="font-family: Helvetica, Arial; font-size: 13px; font-style: normal; font-variant-caps: 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; background-color: rgb(254, 254, 254); float: none; display: inline !important;" class="">Any advice how to rewrite the code so it still would do
its job under the hood?</span></div>
</blockquote>
</div>
I'm not aware of any clean way to do this (with current Swift ;-) —
but this hack passes compilation:
<div class=""><br class=""></div>
<div class="">
<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="">protocol</span> <span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">Proto :</span> <span style="font-variant-ligatures: no-common-ligatures" class="">class</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; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">// `A` is a generic type and therefore should stay as an
associatedtype</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="">associatedtype</span> <span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">A</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: #ba2da2" class="">func</span> <span style="font-variant-ligatures: no-common-ligatures" class="">performWith(</span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">_</span> <span style="font-variant-ligatures: no-common-ligatures" class="">a:
A)</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; color: #ba2da2" class="">struct</span> <span style="font-variant-ligatures: no-common-ligatures" class="">Box&lt;B&gt;
{</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: #ba2da2" class="">var</span> <span style="font-variant-ligatures: no-common-ligatures" class="">performWith:
(</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">B</span><span style="font-variant-ligatures: no-common-ligatures" class="">)
-&gt;</span> <span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Void</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; color: #ba2da2" class="">init</span><span style="font-variant-ligatures: no-common-ligatures" class="">&lt;T:</span> <span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">Proto</span><span style="font-variant-ligatures: no-common-ligatures" class="">&gt;(value:</span> <span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">T</span><span style="font-variant-ligatures: no-common-ligatures" class="">)</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">where</span> <span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">T</span><span style="font-variant-ligatures: no-common-ligatures" class="">.A ==</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">B</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; color: #ba2da2" class="">self</span><span style="font-variant-ligatures: no-common-ligatures" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">performWith</span> <span style="font-variant-ligatures: no-common-ligatures" class="">=
value.</span><span style="font-variant-ligatures: no-common-ligatures; color: #31595d" class="">performWith</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; color: #ba2da2" class="">final</span> <span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">class</span> <span style="font-variant-ligatures: no-common-ligatures" class="">SomeType&lt;B&gt; {</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: #ba2da2" class="">var</span> <span style="font-variant-ligatures: no-common-ligatures" class="">protos:
[</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">Box</span><span style="font-variant-ligatures: no-common-ligatures" class="">&lt;</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">B</span><span style="font-variant-ligatures: no-common-ligatures" class="">&gt;]</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; color: #ba2da2" class="">init</span><span style="font-variant-ligatures: no-common-ligatures" class="">(</span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">_</span> <span style="font-variant-ligatures: no-common-ligatures" class="">protos:
[</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">Box</span><span style="font-variant-ligatures: no-common-ligatures" class="">&lt;</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">B</span><span style="font-variant-ligatures: no-common-ligatures" class="">&gt;])
{</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: #ba2da2" class="">self</span><span style="font-variant-ligatures: no-common-ligatures" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">protos</span> <span style="font-variant-ligatures: no-common-ligatures" class="">=
protos</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; color: #ba2da2" class="">func</span> <span style="font-variant-ligatures: no-common-ligatures" class="">callProtosWith(</span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">_</span> <span style="font-variant-ligatures: no-common-ligatures" class="">b:</span>
<span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">B</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; color: rgb(62, 30, 129);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">self</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #4f8187" class="">protos</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">.</span><span style="font-variant-ligatures: no-common-ligatures" class="">forEach</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; color: rgb(79, 129, 135);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">$0.</span><span style="font-variant-ligatures: no-common-ligatures" class="">performWith</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">(b)</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;" 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></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>