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Hidden features of Ruby

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Is it possible to use 'else' in a list comprehension? [duplicate]

...used in comprehension statements: >>> [a if a else 2 for a in [0,1,0,3]] [2, 1, 2, 3] So for your example, table = ''.join(chr(index) if index in ords_to_keep else replace_with for index in xrange(15)) ...
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Convert string with comma to integer

Is there any neat method to convert "1,112" to integer 1112, instead of 1? 7 Answers 7...
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Sort array of objects by string property value

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python numpy ValueError: operands could not be broadcast together with shapes

In numpy, I have two "arrays", X is (m,n) and y is a vector (n,1) 6 Answers 6 ...
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How to compare arrays in JavaScript?

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OS X: equivalent of Linux's wget

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Definition of a Balanced Tree

... 124 The constraint is generally applied recursively to every subtree. That is, the tree is only ba...
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Converting JavaScript object with numeric keys into array

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How can I easily fixup a past commit?

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