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wookay/unary-function-chainer.jl

Created March 20, 2015 08:01
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unary-function-chainer.jl
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unary-function-chainer.jl
# http://www.codewars.com/kata/unary-function-chainer
# http://stackoverflow.com/questions/28713934/how-to-implement-unary-function-chainer-using-python
f1 = (x) -> x*2
f2 = (x) -> x+2
f3 = (x) -> x^2
chained(funcs) = reduce((f,g)->(n)->n|>f|>g, funcs)
@assert 4 == chained([f1 f2 f3])(0)
@assert 36 == chained([f1 f2 f3])(2)
@assert 12 == chained([f3 f2 f1])(2)
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