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Any equivalent to .= for adding to beginning of string in PHP?
...t something prepended onto it.
You could say the checks are optional, but by having that in there you don't need to worry about passing in a null value by accident.
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
...very usage of "window" and "undefined" can be replaced with a shorter name by the minifyer.
– TLindig
Jun 6 '13 at 8:05
2
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In Objective-C, what is the equivalent of Java's “instanceof” keyword?
...xact comparisons with:
if ([myObject class] == [MyClass class])
but not by using directly MyClass identifier.
Similarily, you can find if the object is of a subclass of your class with:
if ([myObject isKindOfClass:[AnObject class]])
as suggested by Jon Skeet and zoul.
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Are custom elements valid HTML5?
...manner.
Custom elements are new types of DOM elements that can be defined by
authors. Unlike decorators, which are stateless and ephemeral, custom
elements can encapsulate state and provide script interfaces.
Custom elements is a part of a larger W3 specification called Web Components, along with ...
How To Check If A Key in **kwargs Exists?
...eas listed here , which work on regular var's, but it seems **kwargs play by different rules... so why doesn't this work and how can I check to see if a key in **kwargs exists?
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Difference between char* and const char*?
...red up with the use of a variable after the statements mentioned above and by giving reference to that variable.
– ankit.karwasra
Oct 8 '13 at 9:16
3
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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...entation explains:
__autoreleasing to denote arguments that are passed by reference (id *) and are autoreleased on return.
All of this is very well explained in the ARC transition guide.
In your NSError example, the declaration means __strong, implicitly:
NSError * e = nil;
Will be transfo...
getResourceAsStream() vs FileInputStream
...th" respectively). This way you can grab them with help of the ClassLoader by ClassLoader#getResource() or ClassLoader#getResourceAsStream(). It is able to locate files relative to the "root" of the classpath, as you by coincidence figured out. In webapplications (or any other application which use...
Finding current executable's path without /proc/self/exe
...if it has procfs: readlink /proc/curproc/file (FreeBSD doesn't have procfs by default)
NetBSD: readlink /proc/curproc/exe
DragonFly BSD: readlink /proc/curproc/file
Windows: GetModuleFileName() with hModule = NULL
There are also third party libraries that can be used to get this information, such ...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
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Both methods are used by many of the large players. It's a matter of preference. My preference is REST because it's simpler to use and understand.
Simple Object Access Protocol (SOAP):
SOAP builds an XML protocol on top of HTTP or sometimes ...