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Best way to iterate through a Perl array
...he array elements occurs. ($_ is aliased to the element in #1, but #2 and #3 actually copy the scalars from the array.)
#5 might be similar.
In terms memory usage: They're all the same except for #5.
for (@a) is special-cased to avoid flattening the array. The loop iterates over the indexes of the...
how to prevent “directory already exists error” in a makefile when using mkdir
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answered Sep 19 '08 at 3:07
tchentchen
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Is it safe to use -1 to set all bits to true?
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edited Mar 12 '13 at 23:28
0x499602D2
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Sorting arraylist in alphabetical order (case insensitive)
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334
Custom Comparator should help
Collections.sort(list, new Comparator<String>() {
@Ov...
MySQL: Transactions vs Locking Tables
...ay, $100), do their transactions (take out the $20 you're paying, and the $30 they're screwing you over with), and now both code paths have two different balances: $80 and $70. Depending on which ones finishes last, you'll end up with either of those two balances in your account, instead of the $50 ...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...web.xml is declared conform at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don't have a <!DOCTYPE> anywhere in your web.xml. Here's a...
How do you use vim's quickfix feature?
... anoopelias
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answered Nov 17 '09 at 8:06
DrAlDrAl
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Change color of PNG image via CSS?
... the color of a PNG file with filters.
body {
background-color:#03030a;
min-width: 800px;
min-height: 400px
}
img {
width:20%;
float:left;
margin:0;
}
/*Filter styles*/
.saturate { filter: saturate(3); }
.grayscale { filter: grayscale(100%); }
.contrast { ...
Is there a simple way to convert C++ enum to string?
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34 Answers
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How to implement a queue using two stacks?
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edited Dec 22 '16 at 2:36
rimsky
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answered Sep...