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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...
Generating a random password in php
... {
$alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
$pass = array(); //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
for ($i = 0; $i < 8; $i++) {
$n = rand(0, $alphaLength);
$pa...
How to show loading spinner in jQuery?
...
24 Answers
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Best way to repeat a character in C#
...
answered Jan 4 '09 at 22:00
Christian C. SalvadóChristian C. Salvadó
688k171171 gold badges886886 silver badges826826 bronze badges
...
Copy Notepad++ text with formatting?
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284
Here is an image from notepad++ when you select text to copy as html.
and how the formatted t...
Git: fatal: Pathspec is in submodule
...
437
Removing the directory from git and adding it again worked for me:
git rm --cached directory...
How to delete images from a private docker registry?
...
answered Aug 28 '14 at 14:20
Konrad KleineKonrad Kleine
3,38233 gold badges2222 silver badges2727 bronze badges
...
How do I retrieve my MySQL username and password?
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answered Aug 7 '08 at 4:02
Xenph YanXenph Yan
73.7k1515 gold badges4545 silver badges5454 bronze badges
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What does [object Object] mean?
...
54
The default conversion from an object to string is "[object Object]".
As you are dealing with j...
What does the “===” operator do in Ruby? [duplicate]
... # => true
(1..5) === 6 # => false
Integer === 42 # => true
Integer === 'fourtytwo' # => false
/ell/ === 'Hello' # => true
/ell/ === 'Foobar' # => false
The main usage for the === operator is in case expressions, since
case foo
when bar...