Function cloneArray

chapter17/velocity.js:135–137

* Clone an array, works for array-like too.

(arrayLike)

   * Clone an array, works for array-like too.
   */
  function cloneArray(arrayLike) {
      return Array.prototype.slice.call(arrayLike, 0);
  }
  /**
   * The <strong><code>defineProperty()</code></strong> function provides a
   * shortcut to defining a property that cannot be accidentally iterated across.