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return, return None, and no return at all?
...bar(x):
if x < 0:
return
return math.sqrt(x)
https://www.python.org/dev/peps/pep-0008/#programming-recommendations
Basically, if you ever return non-None value in a function, it means the return value has meaning and is meant to be caught by callers. So when you return None,...
Can I change the height of an image in CSS :before/:after pseudo-elements?
...nsic dimensions for both cases
(from http://lists.w3.org/Archives/Public/www-style/2011Nov/0451.html )
Similarly, browsers show very different results on things like http://jsfiddle.net/Nwupm/1/ , where more than one element is generated. Keep in mind that CSS3 is still in early development stage...
Use Font Awesome Icon As Favicon
...favicon generator site such as
http://favicon-generator.org/
or
http://www.favicon.cc/
follow the online instructions on the site you choose. Its usually just a three step process. Save the favicon in the top level of your site.
For compatibility across browsers I recommend always using image...
How do I pass parameters to a jar file at the time of execution?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
_DEBUG vs NDEBUG
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How to insert an item at the beginning of an array in PHP?
...
This will help
http://www.w3schools.com/php/func_array_unshift.asp
array_unshift();
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Rails find_or_create_by more than one attribute?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Finding all cycles in a directed graph
...onald B. Johnson and the paper can be found in the following link:
http://www.cs.tufts.edu/comp/150GA/homeworks/hw1/Johnson%2075.PDF
A java implementation can be found in:
http://normalisiert.de/code/java/elementaryCycles.zip
A Mathematica demonstration of Johnson's algorithm can be found here, ...
Add primary key to existing table
...y detail. Hope this answer can help other SQL beginner.
Reference:https://www.w3schools.com/sql/sql_primarykey.asp
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How do I determine k when using k-means clustering?
...can check the veracity of this information on the following paper:
http://www.ijarcsms.com/docs/paper/volume1/issue6/V1I6-0015.pdf
There is also another method called G-means, where your distribution follows a Gaussian Distribution or Normal Distribution.
It consists of increasing k until all your...