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benhoskings/gist:23714

Created November 11, 2008 02:03
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gistfile1.rbx
module Enumerable
def sift! &block
ret, keep = partition {|i|
yield i
}
self.replace keep
ret
end
end
lol = [ 1, 7, 3, 6, 9, 2 ]
lol.sift! {|i| i < 5 } # => [1, 3, 2]
lol # => [7, 6, 9]
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