| var baseSum = require('./_baseSum'); |
| |
| /** Used as references for various `Number` constants. */ |
| var NAN = 0 / 0; |
| |
| /** |
| * The base implementation of `_.mean` and `_.meanBy` without support for |
| * iteratee shorthands. |
| * |
| * @private |
| * @param {Array} array The array to iterate over. |
| * @param {Function} iteratee The function invoked per iteration. |
| * @returns {number} Returns the mean. |
| */ |
| function baseMean(array, iteratee) { |
| var length = array == null ? 0 : array.length; |
| return length ? (baseSum(array, iteratee) / length) : NAN; |
| } |
| |
| module.exports = baseMean; |
