forked from EVOgeek/Vmeda.Online
37 lines
1.1 KiB
TypeScript
37 lines
1.1 KiB
TypeScript
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// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* Singleton with helper functions for arrays.
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*/
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export class CoreArray {
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/**
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* Flatten the first dimension of a multi-dimensional array.
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*
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* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat#reduce_and_concat
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*
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* @param arr Original array.
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* @return Flattened array.
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*/
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static flatten<T>(arr: T[][]): T[] {
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if ('flat' in arr) {
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return (arr as any).flat();
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}
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return [].concat(...arr);
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}
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}
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