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Tools for analyzing performance of a Haskell program

While solving some Project Euler Problems to learn Haskell (so currently I'm a completly beginner) I came over Problem 12 . I wrote this (naive) solution: ...
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How to create directories recursively in ruby?

I want to store a file as /a/b/c/d.txt, but I do not know if any of these directories exist and need to recursively create them if necessary. How can one do this in ruby? ...
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Create module variables in Ruby

Is there any way to create a variable in a module in Ruby that would behave similar to a class variable? What I mean by this is that it would be able to be accessed without initializing an instance of the module, but it can be changed (unlike constants in modules). ...
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Set custom attribute using JavaScript

I am using The DynaTree (https://code.google.com/p/dynatree) but I am having some problems and hoping someone can help.. 3 ...
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Permanently adding a file path to sys.path in Python

I had a file called example_file.py , which I wanted to use from various other files, so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython. ...
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Java: int array initializes with nonzero elements

According to the JLS, an int array should be filled by zeros just after initialization. However, I am faced with a situation where it is not. Such a behavior occurs first in JDK 7u4 and also occurs in all later updates (I use 64-bit implementation). The following code throws exception: ...
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How do I sort an array of hashes by a value in the hash?

This Ruby code is not behaving as I would expect: 4 Answers 4 ...
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Line continuation for list comprehensions or generator expressions in python

How are you supposed to break up a very long list comprehension? 3 Answers 3 ...
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In CoffeeScript how do you append a value to an Array?

What is the prescribed way to append a value to an Array in CoffeeScript? I've checked the PragProg CoffeeScript book but it only discusses creating, slicing and splicing, and iterating, but not appending. ...
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swift case falling through

Does swift have fall through statement? e.g if I do the following 5 Answers 5 ...