Announce major Generator -> Coroutine rename

[oli-obk]

cc rust-lang/rust#116447
cc rust-lang/rust#116958

[Mark-Simulacrum]

Seems ok!

[the8472]

Probably should mention that it's only relevant for nightly users.

[oli-obk]

Updated. what do I need to do to publish this?

[Mark-Simulacrum]

Currently date is set for tomorrow, I can merge then (ping me). Or happy to publish today, but then date should be updated.

[oli-obk]

huh... I... should probably not be writing blog posts at 2am... not sure why I used the 24th.

@Mark-Simulacrum renamed the file to match today's date

[jeffparsons]

huh... I... should probably not be writing blog posts at 2am... not sure why I used the 24th.

No, you definitely should, because this was super entertaining reading. Can you write all the Rust blog posts from now on? 😛

One question, though: you mentioned that generators are a convenient way to write iterators. Isn't there also a performance angle? For some reason I had the impression that the compiler-generated state machine would be faster than what, e.g., chain can do today. Is that actually true, or did I make that up?

[oli-obk]

For a very simple chain I would think that it comes out as equivalent. We'll have to actually look at examples and codegen to see where we can improve things. In the end, we'll try to be zero cost where plausible