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notahat/factorial.rb

Created November 16, 2010 05:34
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Ruby 1.9 lambda calculus fun
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factorial.rb
alias λ lambda
λ {|f| λ {|x| f[λ {|y| x[x][y] } ] }[λ {|x| f[λ {|y| x[x][y] }] }] }[λ {|f| λ {|n| n == 0 ? 1 : n * f[n-1] } }][6]
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