This is just an idea from the top of my head, probably wild and maybe silly. I haven't given it any serious thought.
Given the existence of the general promotion system (which I like a lot, along with other things in Julia, such as the functor capabilities), I'm wondering about automatic specialization. What I mean is this: suppose you have a type Foo which can be converted to an Int. Suppose as well that you have a function bar that only works on Ints. You cannot currently call bar with a Foo, but since Foo is convertible to an Int, it could make sense that bar() suddenly becomes an applicable method, with implicit conversion... -- ELS'16 registration open! http://www.european-lisp-symposium.org Lisp, Jazz, Aïkido: http://www.didierverna.info
