Variable "i" can not be read at compile time

[data pulverizer]

On Sunday, 24 May 2020 at 16:57:54 UTC, ag0aep6g wrote:
> On 24.05.20 18:34, data pulverizer wrote:
> Since `kernel` is a `Tuple`, you can only access it with 
> compile-time constant indices.
>
> But your loop variable `i` is not a compile-time constant, it's 
> being calculated at run time. What's more, it depends on 
> `results.length` which is also not a compile-time constant. But 
> `results.length` is the same as `kernels.length`. And being the 
> length of a `Tuple`, that one is a compile-time constant.
>
> So you can rewrite your loop as a `static foreach` (which is 
> evaluated during compile-time) using `kernels.length` instead 
> of `results.length`:
>
> static foreach (i; 1 .. kernels.length)
> {
>     results[i] = bench(kernels[i], n, verbose);
> }

Thank you very much. I though that if I used a `static foreach` 
loop D would attempt to run the calculation `bench()` at compile 
time rather than at run time but it doesn't which is good. So 
`static foreach` allows you to index at compile time and if its 
scope runs at run time it is run time and if at compile time it 
is compile time evaluated?