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Clean ways to write multiple 'for' loops
...
// ...
}
(or just:
for ( auto& elem: m ) {
}
if you have C++11.)
And if you need the three indexes during such iterations, it's
possible to create an iterator which exposes them:
class Matrix3D
{
// ...
class iterator : private std::vector<int>::iterator
{
...
How to install a specific version of a ruby gem?
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1182
Use the -v flag:
$ gem install fog -v 1.8
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Environment variables in Mac OS X
...ironment variable.
– Andrew
Feb 10 '11 at 10:04
@Andrew What do you mean, local to the user? I would expect all proces...
Can the Android drawable directory contain subdirectories?
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answered Jul 3 '09 at 11:37
Reto MeierReto Meier
93.7k1818 gold badges9797 silver badges7272 bronze badges
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How can I get an http response body as a string in Java?
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edited Apr 24 '11 at 10:36
answered Apr 24 '11 at 9:33
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Display the current time and date in an Android application
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Heath Borders
26.6k1313 gold badges119119 silver badges220220 bronze badges
answered Feb 16 '10 at 7:44
ZordidZordid
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RuntimeWarning: DateTimeField received a naive datetime
...t;>> import pytz
>>> timezone.now()
datetime.datetime(2013, 11, 20, 20, 8, 7, 127325, tzinfo=pytz.UTC)
And here's a naive object:
>>> from datetime import datetime
>>> datetime.now()
datetime.datetime(2013, 11, 20, 20, 9, 26, 423063)
So if you are passing email ...
Define global variable in a JavaScript function
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answered Apr 26 '11 at 6:44
T.J. CrowderT.J. Crowder
825k153153 gold badges15111511 silver badges15531553 bronze badges
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Why not inherit from List?
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answered Feb 11 '14 at 5:43
Eric LippertEric Lippert
599k164164 gold badges11551155 silver badges20142014 bronze badges
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How do I pick randomly from an array?
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1140
Just use Array#sample:
[:foo, :bar].sample # => :foo, or :bar :-)
It is available in Ru...