Still exploring what D has to offer but this blew my mind:
import std.stdio;
struct Base
{
void print(string text)
{
writeln("Base : " ~ text);
}
int add(int a, int b)
{
return a + b;
}
}
struct Wrap
{
auto opDispatch(string op, Args...)(Args args)
{
enum name = op;
return __traits(getMember, base, name)(args);
}
Base base;
}
int main(string[] argv)
{
Wrap wrap;
wrap.print("wrapped call, magic!");
auto res = wrap.add(1, 5);
return 0;
}
I don't quite understand why "enum name" part is necessary (as my
understanding is that "op" is compile-time constant anyway) but
since I am crap at D that is what worked for me. I was thinking
for log time how great something like that would be in C++ and I
just tried this id D... Mind blown... std::reference_wrapper<>
would be a zillion times more usable with equivalent of
opDispatch() this powerful.
