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.send { color:#77bb77; }
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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>Thats a good point!</p>
<p>Here is some bikeshedding:</p>
<pre><code class="swift">public extension UIViewController {
observe public var view: UIView {
willSet {
// do something useful here
}
didSet {
// do something useful here
}
}
}
</code></pre>
<p>An extra <code>observe</code> keyword might signal to the compiler the correct intended usage. </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_1467976595189166080" 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 8. Juli 2016 um 13:14:38, Leonardo Pessoa (<a href="mailto:me@lmpessoa.com">me@lmpessoa.com</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>
<title></title>
+1. This would allow us to create observers on
any foreign variable. I'm far from a compiler right now but I
wouldn't this syntax create a new variable instead of
observing an existing one? Even if not, by reading this one
could be mislead to believe so. Perhaps you should give it
something to differentiate from creating a new var, for example by
suppressing the type on this declaration.<br>
<br>
On Friday, 8 July 2016, Adrian Zubarev via swift-evolution
<<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
<div>
<p>Hello dear Swift community, I’m not sure if this was discussed
before or not, but I really want to know if something like this is
welcome for the future Swift version. If this topic was already
discussed, I’m apologizing for bringing it back to life in a new
thread.</p>
<p>Lets say I’ve got a third party module and I want to know when
the a variable of some type has changed:</p>
<pre><code>extension UIViewController {
public override var view: UIView {
willSet {
// do something useful here
}
didSet {
// do something useful here
}
}
}
</code></pre>
<p>Wouldn’t be handy to inject custom <code>didSet</code> and
<code>willSet</code> functions into any property or computed
property?</p>
<p>This would also allow us to build a proper two-way-binding
mechanism.</p>
</div>
<div>
<div style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<br></div>
<br>
<div>
<div style="font-family:helvetica,arial;font-size:13px">
-- <br>
Adrian Zubarev<br>
Sent with Airmail</div>
</div>
</div>
</div>
</blockquote>
<br>
<br>
--<br>
L<br>
</div></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>