This is accepts-valid behavior. function(parameters) => expr
means the combination of: 1. specifying "context pointer is not necessary" 2. lambda syntax "(parameters) => expr" I think website documentation has a bug. Kenji Hara 2013/7/10 Brian Schott <briancsch...@gmail.com> > While finishing up work on my parser and grammar specification I found > this in container.d: > > return equal!(function(Elem a, Elem b) => !_less(a,b) && !_less(b,a)) > (thisRange, thatRange); > > It seems to be some strange hybrid of the function literal syntax and the > lambda syntax. It's not documented anywhere (surprise!) and I'm not sure if > I should support it or file an accepts-invalid bug against DMD. >