On 2/9/23 12:45, John Chapman wrote:
> On Thursday, 9 February 2023 at 19:17:55 UTC, Ali Çehreli wrote:
>> I could not figure out eliminating the hard-coded 4. Can we introspect
>> the parameter list of a template like 'fun' in the example? If we
>> could, then we could get 4 that way.
>
> Thank you for this. I don't mind hard-coding the N argument.
> TemplateArgsOf needs an instantiated template but maybe ```enum N =
> count(fun.stringof, ',') + 1``` is good enough.
Hopefully but very fragile:
template t(int[] T = [ 1, 2 ]) {}
void main() {
import std.algorithm : count;
enum N = count(t.stringof, ',') + 1;
static assert(N == 1); // FAILS
}
Same thing with any other thing with comma in it e.g.
template t(T = anotherTemplate!(1, 2)) {}
Ali
