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How can I obtain the element-wise logical NOT of a pandas Series?
...eat: timeit results may vary depending on many factors including hardware, compiler, OS, Python, NumPy and Pandas versions.
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git selective revert local changes from a file
...an do it like this:
git add -i
(select the hunks you want to keep)
git commit -m "tmp"
Now you have a commit with only the changes you want to keep, and the rest is unstaged.
git reset --hard HEAD
At this point, uncommitted changes have been discarded, so you have a clean working directory,...
Missing Maven dependencies in Eclipse project
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Problem solved!
I don't know what exactly solved it, but I did 4 things in Eclipse:
Window-&...
What does -> mean in Python function definitions?
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Java optional parameters
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laginimaineblaginimaineb
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What does immutable mean?
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ahmed khattabahmed khattab
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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How to write a multidimensional array to a text file?
...herefore, we can be a bit more verbose, and differentiate the slices using commented out lines. By default, numpy.loadtxt will ignore any lines that start with # (or whichever character is specified by the comments kwarg). (This looks more verbose than it actually is...)
import numpy as np
# Gener...
Java: how can I split an ArrayList in multiple small ArrayLists?
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Mike QMike Q
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What is the difference between a pseudo-class and a pseudo-element in CSS?
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The CSS 3 selector recommendation is pretty clear about both, but I'll try to show the differences anyway.
Pseudo-classes
Official description
The pseudo-class concept is introduced to permit selection based on information that lies outside...