Steven Watanabe wrote:

AMDG

er wrote:

...

Is this feasible? How?

class Foo { template<typename Signature> struct result{};

template<typename F> struct result<(F::*f)(value_type)>{ typedef value0_type if f == foo, value1_type if f == bar type; };

value0_type foo(value_type); value1_type bar(value_type);

};

How do I invoke result_of to get the result type of F::foo(value_type)?

This is not what boost::result_of is for.

In Christ, Steven Watanabe Thak you for your answer. I was probably misinterpreting the part that reads

The implementation permits the type F to be a function pointer, function reference, member function pointer, or class type. in the doc of result_of. Is someone aware of an example that illustrates the "member function pointer" part?

Steven Watanabe wrote:

AMDG

er wrote:

...

Thak you for your answer. I was probably misinterpreting the part that reads

The implementation permits the type F to be a function pointer, function reference, member function pointer, or class type.

in the doc of result_of. Is someone aware of an example that illustrates the "member function pointer" part?

It works like this:

struct S { int f(int); } typedef int (S::*f_type)(int); typedef boost::result_of::type f_result_type;

Note that this is not very useful if you want to deduce the return type of the function named f in some arbitrary class, because you need to know the type of the member function pointer to use result_of.

In Christ, Steven Watanabe

Thank you for your answer. As a side issue: If F is a class and F() returns F::T&; F const () returns F::T const & result_of will return T& if F::result_type == T&, and void if result_type is not defined?