Multiple dispatch

[Leslaw Bieniasz]

Hello,

I need to implement multimethods in my program.
Can anybody point me to the literature or other
discussions of the most efficient algorithms of
performing multiple dispatch in C++?
Please DO NOT DIRECT ME to the existing libraries
that provide support for multimethods. I need
a public domain ALGORITHM or CODE that I can freely
adapt to my needs.

L.B.

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[v4vijayakumar]

if you can implement your _program_ with multimethods then choose the
appropriate language that supports it. propably, CLOS (Common Lisp
Object System)

 

[kowalzick]

Hello,

I need to implement multimethods in my program.
Can anybody point me to the literature or other
discussions of the most efficient algorithms of
performing multiple dispatch in C++?
Please DO NOT DIRECT ME to the existing libraries
that provide support for multimethods. I need
a public domain ALGORITHM or CODE that I can freely
adapt to my needs.

There is a nice chapter in "Modern C++ Design" from Andrei
Alexandrescu.

Regards,
Patrick

 

[Diego Martins]

More Effective C++ has a good case study too. Read it before getting
Alexandrescu's

 

[wkaras]

Hello,

I need to implement multimethods in my program.
Can anybody point me to the literature or other
discussions of the most efficient algorithms of
performing multiple dispatch in C++?
Please DO NOT DIRECT ME to the existing libraries
that provide support for multimethods. I need
a public domain ALGORITHM or CODE that I can freely
adapt to my needs.

L.B.

Here's some example code. I'm not sure it's anything like
what you have in mind.

struct A
{
virtual void funcB(B &b) = 0;
};

struct A1 : public A
{
virtual void funcB(B &b) { b.funcA1(*this); }
};

struct A2 : public A
{
virtual void funcB(B &b) { b.funcA2(*this); }
};

struct B
{
virtual void funcA1(A1 &a) = 0;
virtual void funcA2(A2 &a) = 0;
};

struct B1 : public B
{
virtual void funcA1(A1 &a);
virtual void funcA2(A2 &a);
};

struct B2 : public B
{
virtual void funcA1(A1 &a);
virtual void funcA2(A2 &a);
};

void foo(A &a, B &b)
{
// Calls appropriate Bx::funcAx() .
a.funcB(b);
}