8 lines
185 B
Crystal
8 lines
185 B
Crystal
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require "math"
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def compose(f : Proc(T, _), g : Proc(_, _)) forall T
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return ->(x : T) { f.call(g.call(x)) }
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end
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compose(->Math.sin(Float64), ->Math.asin(Float64)).call(0.5) #=> 0.5
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