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Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
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Combining two Series into a DataFrame in pandas
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index s1 s2
0 A 1 3
1 B 2 4
Note: This extends to more than 2 Series.
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Performance of FOR vs FOREACH in PHP
...blem. But I really need to ask, why? I understand wanting to make things more efficient, but I think you're wasting your time for a micro-optimization. Remember, Premature Optimization Is The Root Of All Evil...
Edit: Based upon the comment, I decided to do a quick benchmark run...
$a = array()...
Find rows that have the same value on a column in MySQL
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count(1) works equally well, and is more performant. (Learned that trick from Stack Overflow ;-)
– jpaugh
Jul 18 '16 at 18:32
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Postgres: INSERT if does not exist already
...n the updated area at the bottom) including some links if you want to read more about the details.
– Skyguard
Apr 1 '17 at 16:03
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Why use make over a shell script?
...nd on that. While you could do this with a shell script, it would be a lot more work (explicitly checking the last-modified dates on all the files, etc.) The only obvious alternative with a shell script is to rebuild everything every time. For tiny projects this is a perfectly reasonable approach, b...
Numpy array assignment with copy
... to work. B[:] = A[:] does the same thing (but B = A[:] would do something more like 1).
numpy.copy(B, A)
This is not legal syntax. You probably meant B = numpy.copy(A). This is almost the same as 2, but it creates a new array, rather than reusing the B array. If there were no other references to t...
Git: Show all of the various changes to a single line in a specified file over the entire git histor
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Since git 1.8.4, there is a more direct way to answer your question.
Assuming that line 110 is the line saying var identifier = "SOME_IDENTIFIER";, then do this:
git log -L110,110:/lib/client.js
This will return every commit which touched that line ...
SSL certificate rejected trying to access GitHub over HTTPS behind firewall
...s for years now on both Linux, Macs and Windows.
If you want you can read more about it in this blog post
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How to refer to relative paths of resources when working with a code repository
...wing tree structure: /Project_Root_dir /python_files_dir /Some more subdirs here py_file.py /resources /some subdirs here resource_file.csv
– olamundo
Aug 14 '09 at 12:51
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