public Tret UpdateBindingAndInvoke(T0 arg0)
        {
            StandardRule <FastDynamicSiteTarget <T0, Tret> > rule = _rules.GetRule(Context, arg0);

            if (rule != null)
            {
                // site is truly polymorphic, build the polymorphic method
                _target = _rules.GetOrMakeTarget(Context);
                return(_target(this, arg0));
            }


            return((Tret)Context.LanguageContext.Binder.UpdateSiteAndExecute <FastDynamicSiteTarget <T0, Tret> >(Context, Action, new object[] { arg0 }, this, ref _target, ref _rules));
        }
 internal FastDynamicSite(CodeContext context, DynamicAction action)
     : base(context, action)
 {
     this._rules  = RuleSet <FastDynamicSiteTarget <T0, Tret> > .EmptyRules;
     this._target = this._rules.GetOrMakeTarget(null);
 }