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Why is the order in dictionaries and sets arbitrary?
...on for all the (well documented) details. You could also watch this Pycon 2010 presentation by Brandon Rhodes about how CPython dict works, or pick up a copy of Beautiful Code, which includes a chapter on the implementation written by Andrew Kuchling.
Note that as of Python 3.3, a random hash seed ...
How can I measure the similarity between two images? [closed]
...ame differences.
Look at this open source image search application http://www.semanticmetadata.net/lire/. It describes several image similarity algorighms, three of which are from the MPEG-7 standard: ScalableColor, ColorLayout, EdgeHistogram and Auto Color Correlogram.
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How do I remove version tracking from a project cloned from git?
... shell, but the shell can not recognize the parameter -rf of Remove-Item.
www.montanaflynn.me introduces the following shell command to remove all .git files one time, recursively! It's really working!
find . | grep "\.git/" | xargs rm -rf
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Where can I find my .emacs file for Emacs running on Windows?
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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. Some use...
How to convert a SVG to a PNG with ImageMagick?
...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.
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Is “else if” faster than “switch() case”? [duplicate]
... both faster and better practise.
There are various links such as (http://www.blackwasp.co.uk/SpeedTestIfElseSwitch.aspx) that show benchmark tests comparing the two.
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Find out if string ends with another string in C++
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Use boost::algorithm::ends_with (see e.g. http://www.boost.org/doc/libs/1_34_0/doc/html/boost/algorithm/ends_with.html ):
#include <boost/algorithm/string/predicate.hpp>
// works with const char*
assert(boost::algorithm::ends_with("mystring", "ing"));
// also work...
Where do I put image files, css, js, etc. in Codeigniter?
...nd the application outside your documentroot,(public_html, htdocs, public, www... etc)
Inside your public folder, you should put your public info, what the browsers can see, its common to find the folders: images, js, css; so your structure will be:
|- system/
|- application/
|---- models/
|---- v...
What does “yield break;” do in C#?
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Here http://www.alteridem.net/2007/08/22/the-yield-statement-in-c/ is very good example:
public static IEnumerable<int> Range( int min, int max )
{
while ( true )
{
if ( min >= max )
{
yield break;
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Moving project to another folder in Eclipse
...d it's pretty simple to setup CVS to run locally without a server: http://www.tortoisecvs.org/faq.html#cvsinit
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