Question

In my C++ program I need to call a templated function with different data types (int, float, double, char, etc.) and run methods bar1(), bar2().

How to do it without having to explicitly write the call for each type?

foo<int>::bar1()
foo<int>::bar2() 
foo<int>::bar3() 
...


foo<float>::bar1()
foo<float>::bar2() 
foo<float>::bar3() 
...

Answer 1

Since they are void functions in your example, can you rewrite them so that the types can be inferred? Like this:

template <class T>
void example(const T& v)
{
   // do something profound and meaningful here.
   foo<T>::bar1();
   foo<T>::bar2();
   foo<T>::bar3();
}

Now the template type can be inferred by the argument passed to the function:

int x = 0;
double y = 0;
bool b = false;
std::string s = "Hello";

example(x);
example(y);
example(b);
example(s);