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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...
How to get the last element of a slice?
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307
For just reading the last element of a slice:
sl[len(sl)-1]
For removing it:
sl = sl[:len(...
How to include “zero” / “0” results in COUNT aggregate?
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edited Feb 10 '13 at 0:09
answered Feb 10 '13 at 0:04
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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...
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...
error: passing xxx as 'this' argument of xxx discards qualifiers
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537
The objects in the std::set are stored as const StudentT. So when you try to call getId() with ...
MySQL IF NOT NULL, then display 1, else display 0
...
LEFT JOIN addresses a ON c.customerid = a.customerid
WHERE customerid = 123
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NSDefaultRunLoopMode vs NSRunLoopCommonModes
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Warpling
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answered Aug 28 '11 at 20:38
viggio24viggio24
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What is the pythonic way to avoid default parameters that are empty lists?
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153
def my_func(working_list=None):
if working_list is None:
working_list = []
wor...