Just wanted to thank everybody for their suggestions. Ali's code
provided the breakthrough:
```d
import std.stdio;
void main()
{
struct HexBoard(F,I)
{
this(F d, I r, I c) { diameter = d; rows = r; cols = c; }
F diameter;
I rows;
I cols;
}
void displayHexBoard(HB)(HB h) {
writeln(typeof(h.diameter).stringof);
writeln(typeof(h.rows).stringof);
}
auto h1 = HexBoard!(float,uint)(.25, 3, 7);
auto h2 = HexBoard!(double,int)(.3, 5, 5);
displayHexBoard(h1);
displayHexBoard(h2);
}
```
which returned
float
uint
double
int
My problem was with the definition of void displayHexBoard(HB)(HB
h) {} definition.
I kept futzing around with trying to insert HexBoard(F,I) into
where HB is. It is incredibly elegant how D can take h1 or h2
and instantiate the template HB.
