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function: sumBy

sumBy(array: Array, iteratee: function): number

sumBy.js, line 20

This method is like `sum` except that it accepts `iteratee` which is invoked for each element in `array` to generate the value to be summed. The iteratee is invoked with one argument: (value).

Example(s):

const objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]

sumBy(objects, ({ n }) => n)
// => 20

Params:

Name Type Attribute Description
array The array to iterate over.
iteratee The iteratee invoked per element.

Returns:

number 

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    "comment": "/**\r\n * This method is like `sum` except that it accepts `iteratee` which is\r\n * invoked for each element in `array` to generate the value to be summed.\r\n * The iteratee is invoked with one argument: (value).\r\n *\r\n * @since 4.0.0\r\n * @category Math\r\n * @param {Array} array The array to iterate over.\r\n * @param {Function} iteratee The iteratee invoked per element.\r\n * @returns {number} Returns the sum.\r\n * @example\r\n *\r\n * const objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]\r\n *\r\n * sumBy(objects, ({ n }) => n)\r\n * // => 20\r\n */",
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