Edit File: meanBy.js
var baseIteratee = require('./_baseIteratee'), baseMean = require('./_baseMean'); /** * This method is like `_.mean` except that it accepts `iteratee` which is * invoked for each element in `array` to generate the value to be averaged. * The iteratee is invoked with one argument: (value). * * @static * @memberOf _ * @since 4.7.0 * @category Math * @param {Array} array The array to iterate over. * @param {Function} [iteratee=_.identity] The iteratee invoked per element. * @returns {number} Returns the mean. * @example * * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; * * _.meanBy(objects, function(o) { return o.n; }); * // => 5 * * // The `_.property` iteratee shorthand. * _.meanBy(objects, 'n'); * // => 5 */ function meanBy(array, iteratee) { return baseMean(array, baseIteratee(iteratee, 2)); } module.exports = meanBy;
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