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wojtekmach/gist:1137015

Created August 10, 2011 14:58
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Ruby one-liners
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gistfile1.rb
# factorial
(1..5).inject(&:*) # => 120
# reverse
(1..5).inject([]) { |val, v| [v] + val } # => [5, 4, 3, 2, 1]
# fibonacci numbers
(1...5 - 1).inject([0, 1]) { |val, v| val << val[-2] + val[-1] } # => [0, 1, 1, 2, 3]
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