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Infix function composition operator
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Date: 2010-11-10 (13:23)
From: Michael Ekstrand <michael@e...>
Subject: Re: [Caml-list] Infix function composition operator
On 11/09/2010 09:19 PM, Arlen Christian Mart Cuss wrote:
> Hi all,
> I know this was asked at least 12 years ago[1], but is there any
> consensus or reason for there not being a "compose" function in standard
> OCaml, nor an infix operator?
> At the moment I tend to "let compose" or "let (<<-) f g x = f (g x)",
> but I wish I didn't have to!

Batteries[1] includes such an operator in its Std module and its
extension of Pervasives.  The compose operator is is '-|', and the
reverse compose operator is '|-' ((f |- g) x = g (f x)).  It also
provides the pipeline operator '|>' and its converse application
operator '**>'.

- Michael