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What's the safest way to iterate through the keys of a Perl hash?
...ng the expected resulting hash:
(a => 1, A => 2, b => 2, B => 4)
But using each() to do the same thing:
%h = (a => 1, b => 2);
keys %h;
while(my($k, $v) = each %h)
{
$h{uc $k} = $h{$k} * 2; # BAD IDEA!
}
produces incorrect results in hard-to-predict ways. For example:
(a...
Nearest neighbors in high-dimensional data?
...
14 Answers
14
Active
...
How do you remove duplicates from a list whilst preserving order?
...5
Georgy
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answered Jan 26 '09 at 15:47
Markus JarderotM...
How do I put the image on the right side of the text in a UIButton?
...
manmal
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answered May 4 '17 at 14:21
BenjaminBenjamin
...
jQuery Ajax error handling, show custom exception messages
...
answered Jan 16 '09 at 14:25
SprintstarSprintstar
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...
Passing arrays as url parameter
... your query parameters as an associative array:
$data = array(
1,
4,
'a' => 'b',
'c' => 'd'
);
$query = http_build_query(array('aParam' => $data));
will return
string(63) "aParam%5B0%5D=1&aParam%5B1%5D=4&aParam%5Ba%5D=b&aParam%5Bc%5D=d"
http_build_query() h...
PHP function overloading
...
224
You cannot overload PHP functions. Function signatures are based only on their names and do not ...
log4j: Log output of a specific class to a specific appender
I use log4j and would like to route the output of certain Loggers to specific files.
2 Answers
...
An example of how to use getopts in bash
...
524
#!/bin/bash
usage() { echo "Usage: $0 [-s <45|90>] [-p <string>]" 1>&2; exit...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
...an_pozdeev
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answered Feb 16 '11 at 12:30
martin.masamartin.masa
9,70211...