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Convert an NSURL to an NSString
...the path represented by the URL (and to be used with NSFileManager methods for example):
[myUrl path];
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Correct way to pass multiple values for same parameter name in GET request
I'm looking into what is the correct way to pass multiple values for the same parameter name in a GET request.
4 Answers
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What is the best way to find the users home directory in Java?
The difficulty is that it should be cross platform. Windows 2000, XP, Vista, OSX, Linux, other unix variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.
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Copy folder recursively, excluding some folders
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For RHEL derived distros: yum install rsync, or on Debian-based releases: apt-get install rsync . Unless you're building your server from absolute base on your own hardware, this is a non-issue. rsync is installed by defaul...
Is there any particular difference between intval and casting to int - `(int) X`?
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Hmm, nope. This has been prominently documented for almost 11 years.
– Lightness Races in Orbit
Feb 7 '12 at 11:40
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How to detect if CMD is running as Administrator/has elevated privileges?
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ADDENDUM: For Windows 8 this will not work; see this excellent answer instead.
Found this solution here: http://www.robvanderwoude.com/clevertricks.php
AT > NUL
IF %ERRORLEVEL% EQU 0 (
ECHO you are Administrator
) ELSE (
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How do I create a URL shortener?
.... This is necessary so that you can find a inverse function g('abc') = 123 for your f(123) = 'abc' function. This means:
There must be no x1, x2 (with x1 ≠ x2) that will make f(x1) = f(x2),
and for every y you must be able to find an x so that f(x) = y.
How to convert the ID to a shortened URL...
List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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Can you define aliases for imported modules in Python?
In Python, is it possible to define an alias for an imported module?
5 Answers
5
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NSDictionary - Need to check whether dictionary contains key-value pair or not
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Just ask it for the objectForKey:@"b". If it returns nil, no object is set at that key.
if ([xyz objectForKey:@"b"]) {
NSLog(@"There's an object set for key @\"b\"!");
} else {
NSLog(@"No object set for key @\"b\"");
}
Edit: ...