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Cartesian product of x and y array points into single array of 2D points
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[2, 5],
[3, 5]])
See Using numpy to build an array of all combinations of two arrays for a general solution for computing the Cartesian product of N arrays.
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Where can I find my .emacs file for Emacs running on Windows?
...
Copy and pasted from the Emacs FAQ, http://www.gnu.org/software/emacs/windows/:
Where do I put my init file?
On Windows, the .emacs file may be called _emacs for backward compatibility with DOS and FAT filesystems where filenames could not start with a dot. S...
How do I monitor the computer's CPU, memory, and disk usage in Java?
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Have a look at this very detailled article:
http://nadeausoftware.com/articles/2008/03/java_tip_how_get_cpu_and_user_time_benchmarking#UsingaSuninternalclasstogetJVMCPUtime
To get the percentage of CPU used, all you need is some simple maths:
MBeanServerConnection mb...
How do I verify that an Android apk is signed with a release certificate?
...unsigned), otherwise you will find something for CN.
For more details see: http://developer.android.com/guide/publishing/app-signing.html
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Why use def main()? [duplicate]
...tion could be:
import sys
def main(argv):
# My code here
pass
if __name__ == "__main__":
main(sys.argv)
This means you can call main() from other scripts (or interactive shell) passing custom parameters. This might be useful in unit tests, or when batch-processing. But remember that t...
What's the most elegant way to cap a number to a segment? [closed]
...lue is limited to the given range.
*
* Example: limit the output of this computation to between 0 and 255
* (x * 255).clamp(0, 255)
*
* @param {Number} min The lower boundary of the output range
* @param {Number} max The upper boundary of the output range
* @returns A number in the range [min...
How to convert a SVG to a PNG with ImageMagick?
...ly:
$ convert -version
Version: ImageMagick 6.8.9-8 Q16 x86_64 2014-12-17 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC Modules
Delegates: bzlib cairo fontconfig freetype jng jpeg lcms ltdl lzma png rsvg tiff xml zlib
It should display rsvg.
...
What is the purpose of the single underscore “_” variable in Python?
What is the meaning of _ after for in this code?
5 Answers
5
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Accessing class variables from a list comprehension in the class definition
...(1)]
... return Foo
...
>>> dis.dis(foo)
2 0 LOAD_BUILD_CLASS
1 LOAD_CONST 1 (<code object Foo at 0x10a436030, file "<stdin>", line 2>)
4 LOAD_CONST 2 ('Foo')
7 MAKE_FUNCTION ...
Should I use a class or dictionary?
...vantage? What happens if you later want to add some code? Where would your __init__ code go?
Classes are for bundling related data (and usually code).
Dictionaries are for storing key-value relationships, where usually the keys are all of the same type, and all the values are also of one type. Occ...