Compose-Function

Installation |
Usage |
Related |
License






_{logo by Justin Mezzell}

Compose a new function from smaller functions f(g(x))

Installation
------------

npm install compose-function

Usage
-----

Basic usage

``js
import compose from 'compose-function';

const composition = compose(sqr, add2); // sqr(add2(x))

composition(2) // => 16

compose(sqr, inc)(2); // => 9
compose(inc, sqr)(2); // => 5
`

with curry

`js
import compose from 'compose-function';
import { curry, _ } from 'curry-this';


const add = (x, y) => x + y;

// add(6, sqr(add(2, x)))
compose(
add::curry(6),
sqr,
add::curry(2),
);

// map(filter(list, even), sqr)
compose(
map::curry(_, sqr),
filter::curry(_, even),
)([1,2,3,4,5,6,7,8]) // => [4, 16, 36, 64]
`

$3

If you’re wondering what the ::` thing means, you’d better read this excellent overview by @jussi-kalliokoski or have a look at the function bind syntax proposal.
Or checkout the [curry-this docs][ct].

Related
----

* [curry-this][ct]

License
----

MIT © Christoph Hermann

[r]: http://ramdajs.com
[ct]: https://github.com/stoeffel/curry-this