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Create subdomains on the fly with .htaccess (PHP)
...such as *.example.org. A wildcard entry looks like this:
*.example.org. 3600 A 127.0.0.1
2. Include the wildcard in vhost
Next up in the Apache configuration you need to set up a vhost container that specifies the wildcard in the ServerAlias DOCs directive. An example vhost container:
<V...
Force unmount of NFS-mounted directory [closed]
...
Tim Cooper
138k3434 gold badges286286 silver badges249249 bronze badges
answered Sep 2 '08 at 19:05
tesseintessei...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
..., "", "0", null, false or [].
Example:
$o = [];
@$var = ["",0,null,1,2,3,$foo,$o['myIndex']];
array_walk($var, function($v) {
echo (!isset($v) || $v == false) ? 'true ' : 'false';
echo ' ' . (empty($v) ? 'true' : 'false');
echo "\n";
});
Test the above snippet in the 3v4l.org onlin...
When is assembly faster than C?
...out floating point, they shine when it comes to precision as they give you 32 bits of precision with a predictable error (float only has 23 bit and it's harder to predict precision loss). i.e. uniform absolute precision over the entire range, instead of close-to-uniform relative precision (float).
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Getting the parent of a directory in Bash
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350
dir=/home/smith/Desktop/Test
parentdir="$(dirname "$dir")"
Works if there is a trailing slas...
Detecting endianness programmatically in a C++ program
... what unions are for !
bool is_big_endian(void)
{
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return bint.c[0] == 1;
}
The principle is equivalent to the type case as suggested by others, but this is clearer - and according to C99, is guaranteed to be corre...
How do I get both STDOUT and STDERR to go to the terminal and a log file?
... |
edited Dec 25 '19 at 23:42
Don Hatch
3,94233 gold badges2121 silver badges3939 bronze badges
answere...
return, return None, and no return at all?
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answered Mar 8 '13 at 18:19
user2032433user2032433
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Rails: How to change the text on the submit button in a Rails Form
...mit button i know how to do it in html but not shure how to do it in Rails 3
10 Answers
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How do you set the Content-Type header for an HttpClient request?
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983
The content type is a header of the content, not of the request, which is why this is failing. A...