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How do you add swap to an EC2 instance?
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Does pandas iterrows have performance issues?
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Generally, iterrows should only be used in very, very specific cases. This is the general orde...
Returning a boolean from a Bash function
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Build tree array from flat array in javascript
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There is an efficient solution if you use a map-lookup. If the parents always come before thei...
SQL statement to select all rows from previous day
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How to print a percentage value in python?
...entage floating point precision type:
>>> print "{0:.0%}".format(1./3)
33%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__ import division
>>> 1 / 3
0.3333333333333333
# The above 33% example would could now b...
Is there a NumPy function to return the first index of something in an array?
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How to call Makefile from another Makefile?
... called /path/to/project/makefile and one called /path/to/project/gtest-1.4.0/make/Makefile . I'm attempting to have the former call the latter. In /path/to/project/makefile, I have
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How to get overall CPU usage (e.g. 57%) on Linux [closed]
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Take a look at cat /proc/stat
grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} EN...
Python using enumerate inside list comprehension
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167
Try this:
[(i, j) for i, j in enumerate(mylist)]
You need to put i,j inside a tuple for the...