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63 lines
1.1 KiB
Markdown
63 lines
1.1 KiB
Markdown
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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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