Function Composition - language feature

Example from 1 languages: JavaScript

function o(f, g) {
   return function(x) {
       return f(g(x));
   }
}

Example from 1 languages: C#

// Call example:
//   var c = Compose(f, g);
//
//   Func<int, bool> g = _ =>  ...
//   Func<bool, string> f = _ => ...

Func<TIn, TOut> Compose<TIn, TMid, TOut>(Func<TMid, TOut> f, Func<TIn, TMid> g) => _ => f(g(_));

Example from 1 languages: Haskell

foo = f . g

Example from 1 languages: APL

foo←f∘g

Example from 1 languages: Coconut

(f..g..h)(x, y, z)

Example from 1 languages: Lil

on o f g do
 on _ x do f[g[x]] end
end

Example from 1 languages: Raku

my &foo = &f ∘ &g;

Example from 1 languages: fp

/+∘α(bu + 1):<1,2,3,4,5,6,7,8,9,10>

Languages with Function Composition include JavaScript, C#, Haskell, APL, Coconut, Lil, Raku, fp

Languages without Function Composition include C3

View all concepts with or missing a hasFunctionComposition measurement

Read more about Function Composition on the web: 1.

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