16 Jan
2012
16 Jan
'12
10:34 p.m.
This can be implemented using a suitable function_type that returns the function type result_type (arg1_type, ...) from a function type, function pointer, function reference, or from a functor which defines the types result_type, arg1_type, ... (as for example boost::function does).
You can also implement it for any function object with a nontemplated operator() even if it doesn't provide arg1_type etc. typedefs, by examining the signature of its operator(). Regards, Nate