This question relates to Call a class method inside a function which was passed as a string parameter
I have two class hierarchies.
The most base classes for each are obj_t and obj2_t.
I have a generic template
template<typename retval_t>
retval_t obj2_t::getProperty(
const obj_t& obj,
const retval_t (obj2_t::*fProp)(const vec_t&, const string&, const int) const,
const retval_t (obj_t::*fAggregate)(const retval_t&) const,
const vec_t& vec,
const string& s,
const int i)
{
retval_t retval = getPropertySingle<retval_t>(fProp, vec, s, i);
return (obj.*fAggregate)(retval);
};
Each fProp has its corresponding fAggregate.
I want to use the method as
int obj2_t::getX(
const obj_t& obj,
const vec_t& vec,
const string& s,
const int i)
{
int retval = getProperty<int>(obj, &obj2_t::getXSingle, &obj_t::AggregateX, vec, s, i);
return retval;
};
It worked fine in one case.
But in another case where AggregateX was overloaded in class obj_t I got compilation error cannot convert ‘<unresolved overloaded function type>’ to ...
even if there was no ambiguity in which overload was usable.
Why do I need to specify the overload, and how do I do that?
Extra "curiosity" question:
Are there other problematic cases (not solved with the same solution as this) that appear when passing derived classes for obj?
