Function uniqueArray

docs/tests/v2/es6/js/sanddance.js:51667–51694

* unique array with objects based on a key (like 'id') or just by the array's value * @param {Array} src [{id:1},{id:2},{id:1}] * @param {String} [key] * @param {Boolean} [sort=False] * @returns {Array} [{id:1},{id:2}]

(src, key, sort)

  function uniqueArray(src, key, sort) {
    var results = [];
    var values = [];
    var i = 0;

    while (i < src.length) {
      var val = key ? src[i][key] : src[i];

      if (inArray(values, val) < 0) {
        results.push(src[i]);
      }

      values[i] = val;
      i++;
    }

    if (sort) {
      if (!key) {
        results = results.sort();
      } else {
        results = results.sort(function sortUniqueArray(a, b) {
          return a[key] > b[key];
        });
      }
    }

    return results;
  }
  /**
   * get the prefixed property
   * @param {Object} obj