1 |
3a515b92
|
cagy
|
var baseIteratee = require('./_baseIteratee'),
|
2 |
|
|
baseMean = require('./_baseMean');
|
3 |
|
|
|
4 |
|
|
/**
|
5 |
|
|
* This method is like `_.mean` except that it accepts `iteratee` which is
|
6 |
|
|
* invoked for each element in `array` to generate the value to be averaged.
|
7 |
|
|
* The iteratee is invoked with one argument: (value).
|
8 |
|
|
*
|
9 |
|
|
* @static
|
10 |
|
|
* @memberOf _
|
11 |
|
|
* @since 4.7.0
|
12 |
|
|
* @category Math
|
13 |
|
|
* @param {Array} array The array to iterate over.
|
14 |
|
|
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
|
15 |
|
|
* @returns {number} Returns the mean.
|
16 |
|
|
* @example
|
17 |
|
|
*
|
18 |
|
|
* var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
|
19 |
|
|
*
|
20 |
|
|
* _.meanBy(objects, function(o) { return o.n; });
|
21 |
|
|
* // => 5
|
22 |
|
|
*
|
23 |
|
|
* // The `_.property` iteratee shorthand.
|
24 |
|
|
* _.meanBy(objects, 'n');
|
25 |
|
|
* // => 5
|
26 |
|
|
*/
|
27 |
|
|
function meanBy(array, iteratee) {
|
28 |
|
|
return baseMean(array, baseIteratee(iteratee, 2));
|
29 |
|
|
}
|
30 |
|
|
|
31 |
|
|
module.exports = meanBy;
|