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What does “Protocol … can only be used as a generic constraint because it has Self or associated typ
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Protocol Observing inherits from protocol Hashable, which in turn inherits from protocol Equatable. Protocol Equatable has the following requirement:
func ==(lhs: Self, rhs: Self) -> Bool
And a protocol that contains Self somewhere inside it canno...
How do I test if a string is empty in Objective-C?
...aced with its contents so if you invoke the macro with something different from a NSString you still get a message from the compiler. Categories would be far better anyway.
– Zmaster
Aug 8 '13 at 12:06
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UILabel - auto-size label to fit text?
....width;
}
@end
You could more simply use the sizeToFit method available from the UIView class, but set the number of lines to 1 to be safe.
iOS 6 update
If you are using AutoLayout, then you have a built in solution. By setting the number of lines to 0, the framework will resize your label ap...
How to make asynchronous HTTP requests in PHP
...d didn't work. It still waited for responses. This does work though, taken from How do I make an asynchronous GET request in PHP?
function post_without_wait($url, $params)
{
foreach ($params as $key => &$val) {
if (is_array($val)) $val = implode(',', $val);
$post_params[] =...
Regular expression \p{L} and \p{N}
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Apart from the fact that capturing parentheses were used, the REs will actually compile to the same thing (well, in any optimizing RE engine that supports the \p{…} escape sequence style in the first place).
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ASP.NET MVC on IIS 7.5
...%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -ir
Note from David Murdoch's comment:
That the .net version has changed
since this Answer was posted. Check
which version of the framework is in
the %windir%\Microsoft.NET\Framework64
directory and change the command
a...
Why does pattern matching in Scala not work with variables?
...g with upper case, or in back ticks, do you need to be aware that it comes from the surrounding scope.
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Can we write our own iterator in Java?
...interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a means of wrapping a standard iterator in your special Iterator instance (which has the advantage o...
Hidden Features of C#? [closed]
This came to my mind after I learned the following from this question :
296 Answers
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Twitter Bootstrap 3: how to use media queries?
... What about 480px (@screen-xs)? Did that appear later? Got it from here.
– brejoc
Apr 16 '14 at 13:45
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