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Are empty HTML5 data attributes valid?
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useruser
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What's a redirect URI? how does it apply to iOS app for OAuth2.0?
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edited Apr 8 '16 at 15:43
Halalbin
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answered Nov 9 '12 at 13:28
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How to reference a file for variables using Bash?
... to work?
– Ramiro
Jun 18 '14 at 22:30
2
Is there a way to use source by piping in the content ra...
How to delete a character from a string using Python
...to remove the central character:
midlen = len(oldstr)/2 # //2 in python 3
newstr = oldstr[:midlen] + oldstr[midlen+1:]
You asked if strings end with a special character. No, you are thinking like a C programmer. In Python, strings are stored with their length, so any byte value, including \0,...
What does 'super' do in Python?
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319
The benefits of super() in single-inheritance are minimal -- mostly, you don't have to hard-co...
Cannot pass null argument when using type hinting
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362
PHP 7.1 or newer (released 2nd December 2016)
You can explicitly declare a variable to be nul...
Combine two data frames by rows (rbind) when they have different sets of columns
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13 Answers
13
Active
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Returning value from called function in a shell script
...ho "directory not created"
else
echo "directory already created"
fi
3. Share variable
lockdir="somedir"
retval=-1
testlock(){
if mkdir "$lockdir"
then # Directory did not exist, but it was created successfully
echo >&2 "successfully acquired lock: $lockdir"
r...
What's the best way to parse command line arguments? [closed]
...getopt. getopt is pretty much a one-to-one mapping of the standard getopt(3) C library functions, and not very easy to use.
optparse, while being a bit more verbose, is much better structured and simpler to extend later on.
Here's a typical line to add an option to your parser:
parser.add_option...
Performance of FOR vs FOREACH in PHP
...rotime(true) - $start, " Seconds\n";
And the results:
Completed in 0.0073502063751221 Seconds
Completed in 0.0019769668579102 Seconds
Completed in 0.0011849403381348 Seconds
Completed in 0.00111985206604 Seconds
So if you're modifying the array in the loop, it's several times faster to use refe...