ppx_compose

Inlined Function Composition
README

ppx_compose - Inlined Function Composition

ppx_compose is a simple syntax extension which rewrites code containing
function compositions into composition-free code, effectively inlining the
composition operators. The following two operators are supported

let (%) g f x = g (f x)
let (%>) f g x = g (f x)

Corresponding definitions are not provided, so partial applications of (%)
and (%>) will be undefined unless you provide the definitions.

The following rewrites are done:

  • A composition occurring to the left of an application is reduced by
    applying each term of the composition from right to left to the
    argument, ignoring associative variations.

  • A composition which is not the left side of an application is first
    turned into one by η-expansion, then the above rule applies.

  • Any partially applied composition operators are passed though unchanged.

E.g.

h % g % f ==> (fun x -> h (f (g x)))
h % (g % f) ==> (fun x -> h (f (g x)))
(g % f) (h % h) ==> g (f (fun x -> h (h x)))
Install
Published
04 Jun 2017
Sources
ppx_compose-0.0.3.tbz
md5=afc8b36935f4a4d653d99b558c62b617
Dependencies
topkg
build
jbuilder
>= "1.0+beta7"
ocaml
>= "4.02.3"
Reverse Dependencies