| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | /** |
| 2 | * The base implementation of `_.sum` and `_.sumBy` without support for |
| 3 | * iteratee shorthands. |
| 4 | * |
| 5 | * @private |
| 6 | * @param {Array} array The array to iterate over. |
| 7 | * @param {Function} iteratee The function invoked per iteration. |
| 8 | * @returns {number} Returns the sum. |
| 9 | */ |
| 10 | function baseSum(array, iteratee) { |
| 11 | var result, |
| 12 | index = -1, |
| 13 | length = array.length; |
| 14 | |
| 15 | while (++index < length) { |
| 16 | var current = iteratee(array[index]); |
| 17 | if (current !== undefined) { |
| 18 | result = result === undefined ? current : (result + current); |
| 19 | } |
| 20 | } |
| 21 | return result; |
| 22 | } |
| 23 | |
| 24 | module.exports = baseSum; |