4 Concatenative mapdashery.
6 [![browser support](http://ci.testling.com/substack/node-concat-map.png)](http://ci.testling.com/substack/node-concat-map)
8 [![build status](https://secure.travis-ci.org/substack/node-concat-map.png)](http://travis-ci.org/substack/node-concat-map)
14 var concatMap = require('concat-map');
15 var xs = [ 1, 2, 3, 4, 5, 6 ];
16 var ys = concatMap(xs, function (x) {
17 return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
25 [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]
32 var concatMap = require('concat-map')
38 Return an array of concatenated elements by calling `fn(x, i)` for each element
39 `x` and each index `i` in the array `xs`.
41 When `fn(x, i)` returns an array, its result will be concatenated with the
42 result array. If `fn(x, i)` returns anything else, that value will be pushed
43 onto the end of the result array.
48 With [npm](http://npmjs.org) do:
51 npm install concat-map
62 This module was written while sitting high above the ground in a tree.