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What is the difference between user variables and system variables?
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user541686user541686
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How to 'bulk update' with Django?
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27
Note also that as a consequence of not using save(), DateTimeField fields with auto_now=True ("modified" columns) won't be updated.
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How do I interpret precision and scale of a number in a database?
...to the maximum number of digits that are present in the number.
ie 1234567.89 has a precision of 9
Numeric scale refers to the maximum number of decimal places
ie 123456.789 has a scale of 3
Thus the maximum allowed value for decimal(5,2) is 999.99
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How to check if a value exists in a dictionary (python)
... timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754, 0.29107213020324707, 0.27941107749938965]
>>> T(lambda : 'one' in d.values()).repeat()
[0.38303399085998535, 0.37257885932922363, 0.37096405029296875]
>>> T(lambda : 'one' in d.viewvalues()).r...
What is the >>>= operator in C?
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Aug 25 '14 at 22:17
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CSS Selector for
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157
Yes. IE7+ supports attribute selectors:
input[type=radio]
input[type^=ra]
input[type*=d]
input[...
CMake: Project structure with unit tests
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edited May 23 '17 at 12:18
Community♦
111 silver badge
answered Jan 21 '13 at 21:42
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multiprocessing.Pool: When to use apply, apply_async or map?
...you would use apply:
apply(f,args,kwargs)
apply still exists in Python2.7 though not in Python3, and is generally not used anymore. Nowadays,
f(*args,**kwargs)
is preferred. The multiprocessing.Pool modules tries to provide a similar interface.
Pool.apply is like Python apply, except that th...
What is the 'CLSCompliant' attribute in .NET?
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Yousha Aleayoub
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answered Feb 20 '09 at 17:18
Otávio DécioOtávi...
Calling a class function inside of __init__
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edited Aug 8 '17 at 4:53
Azat Ibrakov
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