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Algorithm to get the excel-like column name of a number
...% 26;
$letter = chr(65 + $numeric);
$num2 = intval($num / 26);
if ($num2 > 0) {
return getNameFromNumber($num2 - 1) . $letter;
} else {
return $letter;
}
}
And if you want it one indexed (1 == A, etc):
function getNameFromNumber($num) {
$numeric = ($num ...
Generate JSON string from NSDictionary in iOS
... error:&error];
if (! jsonData) {
NSLog(@"%s: error: %@", __func__, error.localizedDescription);
return @"{}";
} else {
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
}
@e...
Is there XNOR (Logical biconditional) operator in C#?
...r, non-boolean cases present problems, like in this example:
a = 5
b = 1
if (a == b){
...
}
instead, use this:
a = 5
b = 1
if((a && b) || (!a && !b)){
...
}
or
if(!(a || b) && (a && b)){
...
}
the first example will return false (5 != 1), but the second wil...
Try-finally block prevents StackOverflowError
...nally block take twice as long an the stack depth could be
10,000 or more. If you can make 10,000,000 calls per second, this will take 10^3003 seconds or longer than the age of the universe.
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Why is argc not a constant?
...
(Aside: Interestingly, although getopt's prototype suggests it won't modify argv[] but may modify the strings pointed to, the Linux man page indicates that getopt permutes its arguments, and it appears they know they're being naughty. The man page at the Open Group does not mention this permutat...
Difference between Destroy and Delete
What is the difference between
6 Answers
6
...
How can I override Bootstrap CSS styles?
I need to modify bootstrap.css to fit my website. I feel it's better to create a separate custom.css file instead of modifying bootstrap.css directly, one reason being that should bootstrap.css get an update, I'll suffer trying to re-include all my modifications. I'll sacrifice some load tim...
How to use php serialize() and unserialize()
...e transported or stored or otherwise used outside of a running PHP script. If you want to persist such a complex data structure beyond a single run of a script, you need to serialize it. That just means to put the structure into a "lower common denominator" that can be handled by things other than P...
What is difference between cacerts and keystore?
What's the difference between the two, cacerts and keystore?
4 Answers
4
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Escaping a forward slash in a regular expression
... don't need to escape it. But AFAIK in all languages, the only special significance the / has is it may be the designated pattern delimiter.
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