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Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
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Image fingerprint to compare similarity of many images
I need to create fingerprints of many images (about 100.000 existing, 1000 new per day, RGB, JPEG, max size 800x800) to compare every image to every other image very fast. I can't use binary compare methods because also images which are nearly similar should be recognized.
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__getattr__ on a module
How can implement the equivalent of a __getattr__ on a class, on a module?
8 Answers
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Picking a random element from a set
How do I pick a random element from a set?
I'm particularly interested in picking a random element from a
HashSet or a LinkedHashSet, in Java.
Solutions for other languages are also welcome.
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How can I create an object and add attributes to it?
I want to create a dynamic object (inside another object) in Python and then add attributes to it.
16 Answers
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How do you rotate a two dimensional array?
Inspired by Raymond Chen's post , say you have a 4x4 two dimensional array, write a function that rotates it 90 degrees. Raymond links to a solution in pseudo code, but I'd like to see some real world stuff.
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Do threads have a distinct heap?
As far as I know each thread gets a distinct stack when the thread is created by the operating system. I wonder if each thread has a heap distinct to itself also?
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Fully backup a git repo?
Is there a simple way to backup an entire git repo including all branches and tags?
13 Answers
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App restarts rather than resumes
Hopefully someone can help me figure out, if not a solution, at least an explanation for a behaviour.
9 Answers
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Tables instead of DIVs [duplicate]
Under what conditions should you choose tables instead of DIVs in HTML coding?
24 Answers
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