C++ overloaded function as template argument

Question

the simplified version of my code is here

int foo(int x)
{
  return x;
}

int foo(int x, int y)
{
  return x+y;
}

template
int ba         


        

Answer 1

You can give an explicit template argument:

bar(3, foo);

or cast the ambiguous function name to a type from which the template argument can be deduced:

bar(3, static_cast(foo));

or wrap it in another function (or function object) to remove the ambiguity

bar(3, [](int x){return foo(x);});