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concat-map

0.0.2
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  • License MIT

concatenative mapdashery

Package Exports

  • concat-map
  • concat-map/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (concat-map) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

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Concatenative mapdashery.

example

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

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 do:

npm install concat-map

license

MIT

notes

This module was written while sitting high above the ground in a tree.