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@lilpacy(pacy)

elmの関数合成を端的に

Last updated at Posted at 2019-07-23

関数fを適用してから関数gを適用する

以下4つは同値。

g(f(x))
= (g << f) x
= (g << f) <| x
= g << f <| x

<< が <| よりも優先して処理される

以上。

参考

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