RE: [GD-General] Re: Simulating constrained genericity in C++

[Brian H. <bri...@py...>]

I realize I may have inadvertently given the idea that Obj-C doesn't
support static type checking very well (given my examples were that a
client could query if an object supported a message and also what to do
when a message wasn't understood).

Just to be clear, Obj-C also has static type checking just like C++ if
you statically type something.  In addition, Obj-C has the notion of
formal protocols which seem to be pretty much identical to Java
interfaces.  A class can conform to a formal protocol, and if it does
conform than a client knows that all the protocol messages can be
accepted.

Brian