Struggling to implement parallel foreach...

[Kagamin]

On Friday, 14 June 2019 at 09:04:42 UTC, Manu wrote:
> Right, exactly... the compile error should be at the assignment 
> of the
> not-shared closure to the shared delegate. The error would be
> something like "can't assign `Context*` to `shared(Context)*`".
> So, the function can certainly exist, but for shared, you 
> should get
> an error when you attempt to call it passing the closure to the
> function.

The shared function attribute means that its context is shared 
similar to object methods, the error is an attempt to implicitly 
leak unshared data into that shared context, that's why indeed 
function itself is incorrect. Declare the variable as shared and 
it will work.