<html><head><style>
body {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
padding:1em;
margin:auto;
background:#fefefe;
}
h1, h2, h3, h4, h5, h6 {
font-weight: bold;
}
h1 {
color: #000000;
font-size: 28pt;
}
h2 {
border-bottom: 1px solid #CCCCCC;
color: #000000;
font-size: 24px;
}
h3 {
font-size: 18px;
}
h4 {
font-size: 16px;
}
h5 {
font-size: 14px;
}
h6 {
color: #777777;
background-color: inherit;
font-size: 14px;
}
hr {
height: 0.2em;
border: 0;
color: #CCCCCC;
background-color: #CCCCCC;
display: inherit;
}
p, blockquote, ul, ol, dl, li, table, pre {
margin: 15px 0;
}
a, a:visited {
color: #4183C4;
background-color: inherit;
text-decoration: none;
}
#message {
border-radius: 6px;
border: 1px solid #ccc;
display:block;
width:100%;
height:60px;
margin:6px 0px;
}
button, #ws {
font-size: 12 pt;
padding: 4px 6px;
border-radius: 5px;
border: 1px solid #bbb;
background-color: #eee;
}
code, pre, #ws, #message {
font-family: Monaco;
font-size: 10pt;
border-radius: 3px;
background-color: #F8F8F8;
color: inherit;
}
code {
border: 1px solid #EAEAEA;
margin: 0 2px;
padding: 0 5px;
}
pre {
border: 1px solid #CCCCCC;
overflow: auto;
padding: 4px 8px;
}
pre > code {
border: 0;
margin: 0;
padding: 0;
}
#ws { background-color: #f8f8f8; }
.bloop_markdown table {
border-collapse: collapse;
font-family: Helvetica, arial, freesans, clean, sans-serif;
color: rgb(51, 51, 51);
font-size: 15px; line-height: 25px;
padding: 0; }
.bloop_markdown table tr {
border-top: 1px solid #cccccc;
background-color: white;
margin: 0;
padding: 0; }
.bloop_markdown table tr:nth-child(2n) {
background-color: #f8f8f8; }
.bloop_markdown table tr th {
font-weight: bold;
border: 1px solid #cccccc;
margin: 0;
padding: 6px 13px; }
.bloop_markdown table tr td {
border: 1px solid #cccccc;
margin: 0;
padding: 6px 13px; }
.bloop_markdown table tr th :first-child, table tr td :first-child {
margin-top: 0; }
.bloop_markdown table tr th :last-child, table tr td :last-child {
margin-bottom: 0; }
.bloop_markdown blockquote{
border-left: 4px solid #dddddd;
padding: 0 15px;
color: #777777; }
blockquote > :first-child {
margin-top: 0; }
blockquote > :last-child {
margin-bottom: 0; }
code, pre, #ws, #message {
word-break: normal;
word-wrap: normal;
}
hr {
display: inherit;
}
.bloop_markdown :first-child {
-webkit-margin-before: 0;
}
code, pre, #ws, #message {
font-family: Menlo, Consolas, Liberation Mono, Courier, monospace;
}
.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>Correcting myself over and over. Here is the correct url: <a href="https://github.com/DevAndArtist/swift-evolution/blob/extensions_access_modifiers/proposals/nnnn-extensions-access-modifiers.md">https://github.com/DevAndArtist/swift-evolution/blob/extensions_access_modifiers/proposals/nnnn-extensions-access-modifiers.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_1467031436827247104" 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 27. Juni 2016 um 14:39:41, Adrian Zubarev (<a href="mailto:adrian.zubarev@devandartist.com">adrian.zubarev@devandartist.com</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;"><div></div><div>
<title></title>
<div class="bloop_markdown">
<p>I completely rewritten the proposal, you can read the formatted
version here:</p>
<p><a href="https://github.com/DevAndArtist/swift-evolution/blob/19f2583209a5763880e6f6fa6738ea0c6011f2d6/proposals/nnnn-extensions-access-modifiers.md">
https://github.com/DevAndArtist/swift-evolution/blob/19f2583209a5763880e6f6fa6738ea0c6011f2d6/proposals/nnnn-extensions-access-modifiers.md</a></p>
</div>
<div class="bloop_original_html">
<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_1467031116296856832" 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 27. Juni 2016 um 12:58:53, Adrian Zubarev
(<a href="mailto:adrian.zubarev@devandartist.com">adrian.zubarev@devandartist.com</a>)
schrieb:</p>
<blockquote type="cite" class="clean_bq">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div>
<div class="bloop_markdown">
<p><span>And yet another correction of the <strong>default protocol
implementations</strong> part of my reply.</span></p>
<p><span>The imported module is correct, but the default
implementation is not imported (I relied on Xcode which didn’t
raise an error before I started building the project where I was
using the module, and I didn’t build it at the first
time).</span></p>
<p><span>So we’d need to implement <code>foo</code> by
ourself.</span></p>
<pre><span><code class="swift">struct B : A {
public func foo() {}
}
</code></span></pre>
<p><span>The rest of my reply should be fine. With the same access
control it would be more clearer and intuitive how the extension
will be imported.</span></p>
</div>
<div class="bloop_original_html">
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
<span><br></span></div>
<div id="bloop_sign_1467024177600357120" class="bloop_sign">
<div style="font-family:helvetica,arial;font-size:13px">
<span>-- <br>
Adrian Zubarev<br>
Sent with Airmail</span></div>
</div>
<span><br></span>
<p class="airmail_on"><span>Am 27. Juni 2016 um 10:38:12, Adrian
Zubarev (<a href="mailto:adrian.zubarev@devandartist.com">adrian.zubarev@devandartist.com</a>)
schrieb:</span></p>
<blockquote type="cite" class="clean_bq">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div>
<div class="bloop_markdown">
<p><span><span>Lets examine the impact on <strong>default protocol
implementations</strong>:</span></span></p>
<p><span>Currently we have this behavior:</span></p>
<pre><span><code class="swift">public protocol A {
func foo()
}
extension A {
func foo() { /* implement */ }
}
</code></span></pre>
<p><span>The imported version would look like this.</span></p>
<pre><span><code class="swift">public protocol A {
public func foo()
}
</code></span></pre>
<p><span>As the module user you have no clue that there might be a
default implementation, but you sill will be able to use it,
because when conforming to <code>A</code> you don’t have to
implement foo. This implicitly signals you that there is indeed a
default implemenation</span></p>
<pre><span><code class="swift">struct B : A {} // This will be enough
A().foo() // this is fine
</code></span></pre>
<p><span>One could signal the module user that there is a default
implementation by making the extension explicit public as
well.</span></p>
<pre><span><code class="swift">// explicitly marked as public to grant visibility to
// the default implementation extension bag
public extension A {
/// will do something cool
func foo() { /* implement */ }
}
</code></span></pre>
<p><span>The result of the imported module would change and look
like this:</span></p>
<pre><span><code class="swift">public protocol A {
public func foo()
}
extension A {
/// will do something cool
public func foo()
}
</code></span></pre>
<p><span>With the proposed change all default implementations will
become visible by default and I think this is great step as
well.</span></p>
</div>
<div class="bloop_original_html">
<blockquote type="cite" class="clean_bq">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""></div>
</blockquote>
</div>
<div class="bloop_markdown"></div>
</div>
</div>
</blockquote>
</div>
<div class="bloop_markdown"></div>
</div>
</div>
</blockquote>
</div>
<div class="bloop_markdown"></div>
</div></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>