Concatenative mapdashery.
var concatMap = require('concat-map');
var xs = [ 1, 2, 3, 4, 5, 6 ];
var ys = concatMap(xs, function (x) {
return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
});
console.dir(ys);
[ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]
var concatMap = require('concat-map')
Return an array of concatenated elements by calling fn(x, i)
for each element
x
and each index i
in the array xs
.
When fn(x, i)
returns an array, its result will be concatenated with the
result array. If fn(x, i)
returns anything else, that value will be pushed
onto the end of the result array.
With npm do:
npm install concat-map
MIT
This module was written while sitting high above the ground in a tree.
concat-map ========== Concatenative mapdashery. [![browser support](http://ci.testling.com/substack/node-concat-map.png)](http://ci.testling.com/substack/node-concat-map) [![build status](https://secure.travis-ci.org/substack/node-concat-map.png)](http://travis-ci.org/substack/node-concat-map) example ======= ``` js var concatMap = require('concat-map'); var xs = [ 1, 2, 3, 4, 5, 6 ]; var ys = concatMap(xs, function (x) { return x % 2 ? [ x - 0.1, x, x + 0.1 ] : []; }); console.dir(ys); ``` *** ``` [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ] ``` methods ======= ``` js var concatMap = require('concat-map') ``` concatMap(xs, fn) ----------------- Return an array of concatenated elements by calling `fn(x, i)` for each element `x` and each index `i` in the array `xs`. When `fn(x, i)` returns an array, its result will be concatenated with the result array. If `fn(x, i)` returns anything else, that value will be pushed onto the end of the result array. install ======= With [npm](http://npmjs.org) do: ``` npm install concat-map ``` license ======= MIT notes ===== This module was written while sitting high above the ground in a tree.