Templates accepting “anything” in C++

Question

I have a simple template struct associating a string with a value

template struct Field
{
    std::string name; T self;
}

Answer 1

There is no need to use wildcards in C++ templates, since in C++ it always knows the type, and is not "erased" like in Java. To write void foo(Field bar, Field... baz) method(or function) in C++, you would write:

 template
 void foo(Field bar, Field... baz);

Each Field can be a different type. To use the variadic parameters inside the function, you just use baz.... So say you want to call another function:

 template
 void foo(Field bar, Field... baz)
 {
     foo2(baz...);
 }

You can also expand the type with Field..., so if you want to put it in a tuple(you can't put them in array since they can be different types):

 template
 void foo(Field bar, Field... baz)
 {
     std::tuple...> data(baz...);
 }