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Returning value from called function in a shell script
... echo >&2 "successfully acquired lock: $lockdir"
retval=0
else
echo >&2 "cannot acquire lock, giving up on $lockdir"
retval=1
fi
return "$retval"
}
testlock
retval=$?
if [ "$retval" == 0 ]
then
echo "directory not created"
else
echo ...
Java: how can I split an ArrayList in multiple small ArrayLists?
How can I split an ArrayList (size=1000) in multiple ArrayLists of the same size (=10) ?
18 Answers
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What is the difference between
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edited Aug 11 at 9:09
Alexandr Nil
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answered No...
jquery if div id has children
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if ( $('#myfav').children().length > 0 ) {
// do something
}
This should work. The children() function returns a JQuery object that contains the children. So you just need to check the size and see if it has at least one child.
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Standard deviation of a list
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Since Python 3.4 / PEP450 there is a statistics module in the standard library, which has a method stdev for calculating the standard deviation of iterables like yours:
>>> A_rank = [0.8, 0.4, 1.2, 3.7, 2.6, 5.8]
>>> import statis...
(-2147483648> 0) returns true in C++?
... attempt using unsigned types to represent the value (for example, in C89/90 compilers were required to use unsigned long int, but not in C99 or C++). Implementations are allowed to do anything, since the behavior is undefined anyway.
As a side note, this is the reason why constants like INT_MIN ar...
Counting the number of True Booleans in a Python List
...rams
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23
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In-memory size of a Python structure
...gt;>> import decimal
>>>
>>> d = {
... "int": 0,
... "float": 0.0,
... "dict": dict(),
... "set": set(),
... "tuple": tuple(),
... "list": list(),
... "str": "a",
... "unicode": u"a",
... "decimal": decimal.Decimal(0),
... "object": ob...
How to reliably open a file in the same directory as a Python script
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203
I always use:
__location__ = os.path.realpath(
os.path.join(os.getcwd(), os.path.dirname(__...
Difference between InvariantCulture and Ordinal string comparison
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309
InvariantCulture
Uses a "standard" set of character orderings (a,b,c, ... etc.). This is in c...