Function last

MathBox/mathbox-bundle.js:39724–39741

* Gets the last element or last `n` elements of an array. If a callback is * provided elements at the end of the array are returned as long as the * callback returns truey. The callback is bound to `thisArg` and invoked * with three arguments; (value, index, array). * * If a

(array, callback, thisArg)

     * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }]
     */
    function last(array, callback, thisArg) {
      var n = 0,
          length = array ? array.length : 0;

      if (typeof callback != 'number' && callback != null) {
        var index = length;
        callback = lodash.createCallback(callback, thisArg, 3);
        while (index-- && callback(array[index], index, array)) {
          n++;
        }
      } else {
        n = callback;
        if (n == null || thisArg) {
          return array ? array[length - 1] : undefined;
        }
      }
      return slice(array, nativeMax(0, length - n));
    }

    /**
     * Gets the index at which the last occurrence of `value` is found using strict