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What is the _snowman param in Ruby on Rails 3 forms for?
In Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
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Find TODO tags in Eclipse
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Is there an easy way to view all methods which contain this comment? Some sort of menu opti...
How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
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edited Jul 23 '14 at 19:10
answered Nov 26 '09 at 5:09
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Use of .apply() with 'new' operator. Is this possible?
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How do you use bcrypt for hashing passwords in PHP?
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bcrypt is a hashing algorithm which is scalable with hardware (via a configurable number of roun...
How to unzip a list of tuples into individual lists? [duplicate]
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Use zip(*list):
>>> l = [(1,2), (3,4), (8,9)]
>>> list(zip(*l))
[(1, 3, 8), (2, 4, 9)]
The zip() function pairs up the elements from all inputs, starting with the first values, then the second, etc. By using *l you apply all tuples in l as separat...
Convert a matrix to a 1 dimensional array
I have a matrix (32X48).
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Java JUnit: The method X is ambiguous for type Y
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Named regular expression group “(?Pregexp)”: what does “P” stand for?
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How do I build a numpy array from a generator?
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Numpy arrays require their length to be set explicitly at creation time, unlike python lists. T...