Nice, so the error message is lying. This is a bit more complete:

```d
import...

On Wednesday, 8 December 2021 at 08:07:59 UTC, Petar Kirov [ZombineDev] wrote:

At...

Incidentally, yesterday I played with a very similar solution. Here's my version:

https://run...

This seems to work, maybe it is closer to what you are looking for.

```d...

The problem with struct-based solution is that I will likely be stuck with only...

...Error: closures are not yet
> supported in CTFE
> }

I don't know whether the workaround...

...Error: closures are not yet supported in CTFE`" if I create an compile-time constant...

These are constraints that allows you to catch bugs and inefficiencies at compile time.

Circle...

Depends on what you want to do. If the compilation of one source-file creates...

You are reading more than what it is there.

I think Circle is the right...