gistfile1.txt

    bind: function(that, func) {
      if(typeof(func) !== 'function') {
        //  Only functions can be bound, but for readability of calling code, we
        //  don't want to worry about calling bind on non-functions.
        return func;
      }
      if(func.bind) {
        //  Use built-in implementation of bind
        return func.bind(that);
      }

      return function() {
        return func.apply(that, arguments);
      }
    }