toArray using slice

```javascript
(function() {
  'use strict';

  function toArrayUsingFor(args) {
    var i, l, result;
    result = [];
    for (i = 0, l = args.length; i < l; i++) result[i] = args[i];
    return result;
  }

  function toArrayUsingSlice(args) {
    var result;
    result = Array.prototype.slice.call(args);
    return result;
  }

  var args = (function() {
    var args = [];
    var value;
    while (args.length < 1000000) {
      value = Math.random().toString(36).slice(2);
      args.push(value);
    }
    return args;
  })();
  var i = 0;

  console.time('for');
  toArrayUsingFor(args);
  console.timeEnd('for'); // 36.874ms

  console.time('slice');
  toArrayUsingSlice(args);
  console.timeEnd('slice'); // slice: 13.100ms
})();
```

300% faster!!!