On Saturday, 19 March 2022 at 05:54:26 UTC, Vinod K Chandran
wrote:
Question 1 - `U` is appearing in the first static if statement.
But we had to write `U` on the template line, right? Like -
`template rank(T, U)`
Question 2 - The statif if test is - `T t == U[ ]` What does
that mean ?
Question 3 - if `T t == U[ ]` is the test, then I think when we
pass
You don't need anything extra while using it...
I think U is declare a range. Here is a recursive pattern. Just
like the code I wrote below:
```d
import std.stdio;
alias outer O;
struct outer {
int i;
O * o;
}
int rank(T)(T* s) {
int count = 1;
if(s.o is null) return count;
return count + rank(s.o);
}
void main() {
auto test = O(1, new O(2, new O(3, new O)));
rank(test.o).writeln;
test.i.write(", ");
test.o.i.write(", ");
test.o.o.i.writeln;
} /* CONSOLEOUT:
3
1, 2, 3
*/
```
SDB@79
