Iterators and Ranges: Comparing C++ to D to Rust

[Ola Fosheim Grøstad]

On Tuesday, 15 June 2021 at 07:22:24 UTC, Araq wrote:
> We couldn't copy C++ or D's designs because they are 
> fundamentally unsafe (iterator invalidation is complex and 
> expensive).

Yes, but C++20 coroutines are completely different though.

My understanding is that the compiler analyse the coroutine 
function and breaks it up into many functions so that the stack 
is empty when it hits ```co_yield```, then the state is 
synthesised into an object (I guess you could call it a closure).

Is this what Nim closure-iterators do?