1.0.7 • Published 8 years ago
halis-curry v1.0.7
halis-curry
Spice up the JavaScript inter-webs with some currying
Install
npm install halis-curry --save
Unit Tests ( if you download the git repo )
npm install && npm run test
Usage
Minimal usage:
const curry = require( 'halis-curry' );
const add = ( a, b, c ) => a + b + c;
const fn = curry( add );
fn( 2, 2, 2 ); // 6
fn( 2, 2 )( 2 ); // 6
fn( 2 )( 2 )( 2 ); // 6
fn( 2, 2, 2, 2 ); // 6
fn( 2, 2, 2 )( 2 ) // Error: after fn( 2, 2, 2 ) the result is 6 not a function!
/***
lets expand the signature of a find function
which normally only gives you access to the item and index
***/
const list = [
{ id: 1, name: 'Bob' },
{ id: 2, name: 'Billy' }
];
const find = ( searchId, item, index ) => item.id === searchId;
const fn = curry( find )( 1 );
/*
now our function can have access to the searchId param of 1
and still be used by [].find
*/
list.find( fn ); // { id: 1, name: 'Bob' }
/***
lets expand the signature of a map function
which normally only gives you access to the item and index
***/
const list = [
{ id: 1, name: 'Bob' },
{ id: 2, name: 'Billy' }
];
const transform = ( msg, item, index ) => {
item.msg = msg
return item;
};
const fn = curry( transform )( 'awesome' );
list.map( fn );
/*
[
{ id: 1, name: 'Bob', msg: 'awesome' },
{ id: 2, name: 'Billy', msg: 'awesome' }
]
*/