c++ - Why can't functions be overloaded by return type? -

possible duplicates:
function overloading return type?
puzzle: overload c++ function according return value

because have library exposes bunch of functions in form of:

bool getval(); double getval(); int getval(); long getval(); //so on.

and have wrap these. i'd rather not rewrite same set of functions again. i'd like

template<class t> t getval(){}

but can't seem working. ideas?

you can't overload on return types not mandatory use return value of functions in function call expression.

for example, can say

getval();

what compiler now?

shell