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* check source files for license header Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com> * tweak Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com> * add license header to all relevant source files Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
59 lines
2.5 KiB
TypeScript
59 lines
2.5 KiB
TypeScript
/**
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* Copyright (c) 2021 OpenLens Authors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* This function splits an array into two sub arrays on the first instance of
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* element (from the left). If the array does not contain the element. The
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* return value is defined to be `[array, [], false]`. If the element is in
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* the array then the return value is `[left, right, true]` where `left` is
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* the elements of `array` from `[0, index)` and `right` is `(index, length)`
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* @param array the full array to split into two sub-arrays
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* @param element the element in the middle of the array
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* @returns the left and right sub-arrays which when conjoined with `element`
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* is the same as `array`, and `true`
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*/
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export function splitArray<T>(array: T[], element: T): [T[], T[], boolean] {
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const index = array.indexOf(element);
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if (index < 0) {
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return [array, [], false];
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}
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return [array.slice(0, index), array.slice(index + 1, array.length), true];
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}
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/**
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* Splits an array into two parts based on the outcome of `condition`. If `true`
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* the value will be returned as part of the right array. If `false` then part of
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* the left array.
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* @param src the full array to bifurcate
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* @param condition the function to determine which set each is in
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*/
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export function bifurcateArray<T>(src: T[], condition: (item: T) => boolean): [falses: T[], trues: T[]] {
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const res: [T[], T[]] = [[], []];
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for (const item of src) {
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res[+condition(item)].push(item);
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}
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return res;
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}
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