Error: template instance does not match template declaration

[Tejas]

On Wednesday, 17 November 2021 at 10:10:43 UTC, Vitalii wrote:
> Hello! I am getting the following error:
> ```
> inst.d(8): Error: template instance `Worker!(Mode.Inspect)` 
> does not match template declaration `Worker(mode : Mode)
> ```
>
> when compile next code:
> ```
> enum Mode { Inspect, Execute }
>
> class Worker(mode : Mode) {
> 	this() {}
> }
>
> void main() {
> 	auto W = Worker!(Mode.Inspect)();
> }
> ```
> Can anybody suggest to me what I do wrong?

```d
enum Mode { Inspect, Execute }

class Worker(Mode /*no need for template specialization :) */a) {
	this() {}
}

void main() {
	auto W =  new/*Add new here, because this ais a class, not 
struct*/ Worker!(Mode.Inspect)();
}