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multiprocessing: How do I share a dict among multiple processes?
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A general answer involves using a Manager object. Adapted from the docs:
from multiprocessing import Process, Manager
def f(d):
d[1] += '1'
d['2'] += 2
if __name__ == '__main__':
manager = Manager()
d = manager.dict()
d[1] = '1'
d['2'] = 2
p1 = Proce...
Convert Year/Month/Day to Day of Year in Python
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There is a very simple solution:
from datetime import datetime
day_of_year = datetime.now().timetuple().tm_yday
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How to work with complex numbers in C?
... can I work with complex numbers in C? I see there is a complex.h header file, but it doesn't give me much information about how to use it. How to access real and imaginary parts in an efficient way? Is there native functions to get module and phase?
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How to see full symlink path
...r stat symlinkName not all the path is displayed
(e.g ../../../one/two/file.txt )
5 Answers
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Fragment onResume() & onPause() is not called on backstack
I have multiple fragment inside an activity. On a button click I am starting a new fragment, adding it to backstack. I naturally expected the onPause() method of current Fragment and onResume() of new Fragment to be called. Well it is not happening.
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Total size of the contents of all the files in a directory [closed]
When I use ls or du , I get the amount of disk space each file is occupying.
12 Answers
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Why does string::compare return an int?
Why does string::compare return an int instead of a smaller type like short or char ? My understanding is that this method only returns -1, 0 or 1.
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Is pass-by-value a reasonable default in C++11?
In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned upon. Instead, C++ programmers tend to pass references around, which is faster, but which introduces all sorts of complicated questions around ownership and especially around memory ma...
How to find the last field using 'cut'
Without using sed or awk , only cut , how do I get the last field when the number of fields are unknown or change with every line?
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Loop through all the files with a specific extension
I want to loop through each file in the current folder and check if it matches a specific extension. The code above doesn't work, do you know why?
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