## ppx_composeversion

#### 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)))
```

Author | Petter A. Urkedal <paurkedal@gmail.com> |
---|---|

License | LGPL-3.0-or-later WITH LGPL-3.0-linking-exception |

Published | |

Homepage | https://github.com/paurkedal/ppx_compose |

Issue Tracker | https://github.com/paurkedal/ppx_compose/issues |

Maintainer | Petter A. Urkedal <paurkedal@gmail.com> |

Dependencies | |

Source [http] | https://github.com/paurkedal/ppx_compose/releases/download/v0.2.1/ppx_compose-v0.2.1.tbz sha256=414f72a7659f2e85cf87ddcbf9981f793aa78ea3a607c35a8237e5ee305811b3 sha512=d69bfab88b4d4949bc5189724f954f33e1c2fa36d9fcf1dded351d379c241345533bf12bf493b26acbbcb6bd726674c22c934f037ec0b2820b6a5f99cfbc9ba3 |

Edit | https://github.com/ocaml/opam-repository/tree/master/packages/ppx_compose/ppx_compose.0.2.1/opam |