This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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50 lines
1.1 KiB
50 lines
1.1 KiB
/** |
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* Copyright (c) 2015-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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* |
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* @providesModule groupByEveryN |
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* @flow |
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*/ |
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/** |
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* Useful method to split an array into groups of the same number of elements. |
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* You can use it to generate grids, rows, pages... |
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* |
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* If the input length is not a multiple of the count, it'll fill the last |
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* array with null so you can display a placeholder. |
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* |
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* Example: |
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* groupByEveryN([1, 2, 3, 4, 5], 3) |
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* => [[1, 2, 3], [4, 5, null]] |
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* |
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* groupByEveryN([1, 2, 3], 2).map(elems => { |
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* return <Row>{elems.map(elem => <Elem>{elem}</Elem>)}</Row>; |
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* }) |
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*/ |
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'use strict'; |
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function groupByEveryN<T>(array: Array<T>, n: number): Array<Array<?T>> { |
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var result = []; |
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var temp = []; |
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for (var i = 0; i < array.length; ++i) { |
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if (i > 0 && i % n === 0) { |
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result.push(temp); |
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temp = []; |
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} |
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temp.push(array[i]); |
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} |
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if (temp.length > 0) { |
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while (temp.length !== n) { |
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temp.push(null); |
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} |
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result.push(temp); |
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} |
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return result; |
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} |
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module.exports = groupByEveryN;
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