Template instance does not match template declaration

[0xEAB]

On Friday, 15 August 2025 at 12:02:19 UTC, Marc wrote:
> Can anyone please help me getting it to work?

It seems like you’ve accidentally used the wrong syntax for the 
template parameter.
To make the parameter a value parameter of type `size_t`, write:

```
size_t getCol(size_t N)() {
    return N;
}
```

Also, your return type was off. Can’t return data from a `void` 
function.