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Programming-Idioms

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  • Python

Idiom #35 First-class function : compose

Implement a function compose (A -> C) with parameters f (A -> B) and g (B -> C), which returns the composition function g ∘ f

def compose(f, g):
    return lambda a: g(f(a))

We could have used a named function but a lambda is shorter
(defn compose [f g]
   (comp g f))

New implementation...
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