On 7/24/2015 2:27 PM, Tofu Ninja wrote:
But thats exactly how normal interfaces work...
No it isn't. Google QueryInterface(). Nobody lists all the interfaces at the top
level functions, which is that Rust traits and C++ concepts require.
eg:
interface Iface{ void foo(){} }
void func1(Iface x){ func2(x); }
void func2(Iface x){ func3(x); }
void func3(Iface x){ x.bar(); } // ERROR no bar in Iface
Only options here are A: update Iface to have bar() or B: make a new interface
and change it on the whole tree. The same "problem" would exist for the
concepts, but its the reason why people want it.
Sigh. Nothing I post here is understood.
