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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>I come across this topic and I instantly was overwhelmed by this idea of the <code>Setup Closures</code>. I build a little extension just to test it with UIKit. I thought adding <code>this</code> keyword for <code>Setup Closures</code> was a good idea. If we also could remove <code>this in</code> from the closure it would look good on my opinion.</p>
<pre><code class="swift">protocol SettableType {
init() // designated initializer
}
extension SettableType {
init(@noescape setup: (this: Self) -> Void) {
self.init()
setup(this: self)
}
}
extension UIView: SettableType {}
let view = UIView()
let questionLabel = UILabel() { this in /// <- REMOVE
this.textAlignment = .Center
this.font = UIFont(name:"SomeFontName", size: 72)
this.text = "Hello World"
this.numberOfLines = 0
view.addSubview(this)
}
</code></pre>
<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> <div id="bloop_sign_1449402224132299008" class="bloop_sign"><div><font face="helvetica, arial">— </font></div><div>Regards Adrian<br></div></div> <br><p class="airmail_on">Am 6. Dezember 2015 bei 01:16:31, ilya 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><div></div><div>
<title></title>
<div dir="ltr">> PROBLEM: With many Apple-supplied classes,
typical initializers fail to fully set up an instance for
use. Here's one example: ...
<div><br></div>
<div>FWIW, I created a configuration operator more then a year ago,
and use it in all of my Swift projects:</div>
<div><br></div>
<div>
<div>let task = NSTask() +=+ {</div>
<div> $0.launchPath = "/usr/bin/mdfind"</div>
<div> $0.arguments = ["kMDItemDisplayName ==
*.playground"]</div>
<div> $0.standardOutput = pipe</div>
<div>}</div>
<div><br></div>
<div>Note you can also use the configured object in the rhs:</div>
<div><br></div>
<div>
<div>let questionLabel = UILabel() +=+ {</div>
<div> $0.textAlignment = .Center</div>
<div> $0.font =
UIFont(name:"DnealianManuscript", size: 72)</div>
<div> $0.text = currentQuestion.questionText</div>
<div> $0.numberOfLines = 0</div>
</div>
<div> view.addSubview($0)</div>
<div>}</div>
<div><br></div>
</div>
<div>This $0. certainly looks ugly and it would be great to be able
to simplify this. I don't llike the following much though
(dot-syntax can be ambiguos here, and using simply a method name is
even worse):</div>
<div><br></div>
<div>
<div>let questionLabel = UILabel() +=+ {</div>
<div> .textAlignment = .Center</div>
<div> .font = UIFont(name:"DnealianManuscript",
size: 72)</div>
<div> .text = currentQuestion.questionText</div>
<div> .numberOfLines = 0</div>
<div> view.addSubview($0)</div>
<div>}</div>
</div>
<div><br></div>
<div>Actually I would be happy with something like</div>
<div><br></div>
<div>
<div>let questionLabel = UILabel() .{</div>
<div> ..textAlignment = .Center</div>
<div> ..font = UIFont(name:"DnealianManuscript", size:
72)</div>
<div> ..text = currentQuestion.questionText</div>
<div> ..numberOfLines = 0</div>
<div> view.addSubview($0)</div>
<div>}</div>
</div>
<div><br></div>
<div>Other thoughts?</div>
<div><br></div>
<div> </div>
</div>
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_______________________________________________<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>