mirror of
https://gitlab.com/openstapps/openstapps.git
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32 lines
1.0 KiB
TypeScript
32 lines
1.0 KiB
TypeScript
/*
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* Copyright (C) 2022 StApps
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/**
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* Sum an an array
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*/
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export function sumBy<T extends object>(
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collection: T[],
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transform: (value: T) => number | undefined,
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): number {
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return collection.reduce((accumulator, item) => accumulator + (transform(item) || 0), 0);
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}
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/**
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* Sum an array of numbers
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*/
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export function sum(collection: Array<number | undefined>): number {
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return collection.reduce<number>((accumulator, item) => accumulator + (item || 0), 0);
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}
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