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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: A...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
I'm making a php login, and I'm trying to decide whether to use SHA1 or Md5, or SHA256 which I read about in another stackoverflow article. Are any of them more secure than others? For SHA1/256, do I still use a salt?
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Is APC compatible with PHP 5.4 or PHP 5.5?
...cide with the php 5.4 release (I wish they would have included APC in PHP core like originally planned).
14 Answers
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How to check if array is empty or does not exist? [duplicate]
What's the best way to check if an array is empty or does not exist?
1 Answer
1
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What is the format specifier for unsigned short int?
...:201x - 7.21.6.1-7
Specifies that a following d , i , o , u , x , X , or n conversion
specifier applies to an argument with type pointer to short or
unsigned short.
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Automatic prune with Git fetch or pull
If someone deleted a remote branch because the work is over and I don't know, I won't do a git fetch --prune and eventually I will push back the deleted branch.
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REST API Best practices: Where to put parameters? [closed]
...d to be easier to put in the query string.
If you want to return a 404 error when the parameter value does not correspond to an existing resource then I would tend towards a path segment parameter. e.g. /customer/232 where 232 is not a valid customer id.
If however you want to return an empty list...
lock(new object()) — Cargo cult or some crazy “language special case”?
... it can only run once at a time
// e.g. comands on the Mars Rover, or programs on iOS pre 4 / 5 ??
}
}
and thought he could cut the number of lines.
I'd be very worried if that were the case though...
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Mismatch Detected for 'RuntimeLibrary'
...I can easily include all the headers. When I tried to compile, I got an error about unresolved symbols.
4 Answers
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What does “where T : class, new()” mean?
...ss (reference type) and must have a public parameter-less default constructor.
That means T can't be an int, float, double, DateTime or any other struct (value type).
It could be a string, or any other custom reference type, as long as it has a default or parameter-less constructor.
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