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Knight's Shortest Path on Chessboard
...ust know
common algorithms including Dijkstra's.
A good starting point is reading
Introduction to Algorithms ISBN 0-262-03384-4.
Or you could try wikipedia, http://en.wikipedia.org/wiki/List_of_algorithms
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In SQL Server, when should you use GO and when should you use semi-colon ;?
...nk you for including punctuation in your comment, making it easy for me to read and understand, particularly the sentence terminator characters. Although, your usage of hyphens doesn't comply with standard English...
– onedaywhen
Dec 3 '15 at 9:39
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Android: AsyncTask vs Service
Why do I read in the answer to most questions here a lot about AsyncTask and Loaders but nothing about Services ? Are Services just not known very well or are they deprecated or have some bad attributes or something? What are the differences?
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“Diff” an image using ImageMagick
...the diff would be black in one direction and white in the other. Harder to read, but quicker to generate, and it can contain color information. I guess you would match my command even more closely if you were using “darken only” instead of “screen”, and color unused channels white instead of...
What does gcc's ffast-math actually do?
...ter single-instruction math functions, which means avoiding a write to a thread-local variable (this can make a 100% difference for those functions on some architectures).
Third, it makes the assumption that all math is finite, which means that no checks for NaN (or zero) are made in place where th...
How can I change my Cygwin home folder after installation?
...less you will be using a computer that is part of a Windows Domain. Cygwin reads group information from the Windows account databases, but you can add an /etc/group file if your machine is often disconnected from its Domain Controller.
At the Cygwin bash prompt type the following:
cp /etc/group /...
Accessing last x characters of a string in Bash
...t:
echo $string | cut -c $((${#string}-2))-$((${#string}))
This is more readable if you do it in two lines by defining the length ${#string} as a separate variable.
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Google Authenticator implementation in Python
...e I'm trying to log into was lowercase, not uppercase. Changing line 4 to read "key = base64.b32decode(secret, True)" fixed the problem for me.
– Chris Moore
Nov 12 '12 at 22:34
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Guaranteed lifetime of temporary in C++?
...C team on that walks through this in great detail and I encourage folks to read it.
The pedagogical example for moving rvalue's is temporary strings and I'll show assignment in a constructor. If I have a class MyType that contains a string member variable, it can be initialized with an rvalue in t...
git diff between cloned and original remote repository
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Another reply to your questions (assuming you are on master and already did "git fetch origin" to make you repo aware about remote changes):
1) Commits on remote branch since when local branch was created:
git diff HEAD...origin/master
2) I assume by "working copy" you mean your local b...