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bosmacs/list_comprehension.rb

Created October 8, 2009 15:59
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list_comprehension.rb
# add list comprehensions to arrays, used like so:
# >> (1..25).to_a.comprehend { |x| x**2 if not x % 2 == 0 }
# => [1, 9, 25, 49, 81, 121, 169, 225, 289, 361, 441, 529, 625]
class Array
def comprehend(&block)
block ? map(&block).compact : self
end
end
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