Multiple types in one specialized D template

Question

Say I have to deal ushort and uint some way, but string differently. So guess I need one specialized template for string and other to both ushort and uint. Is it?

// for most
void func(T)(T var) { ... }

// for uint and ushort
void func(T: uint, ushort)(T var) { ... }

That is the idea, although the code can't compile. It's valid or very bad?

Answer 1

Try this:

void func(T)(T var) if ( is(T : uint) || is(T : ushort) )
{
   ...
}

void func(T : string)(T var)
{
   ...
}

You could also do it in one function:

void func(T)(T var)
{
    static if ( is(T : uint) || is(T : ushort) )
    {
        ...
    }
    else if ( is(T : string) )
    {
        ...
    }
    else
    {
        // handle anything else
    }
}