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