But were any _language_ decisions discarded due to compile time concerns? I don't think anyone would claim the folks working on the rust compiler don't care.
On that note, thank you for your part! I sure enjoy your work! :)
On that note, thank you for your part! I sure enjoy your work! :)
But now it's 2025, and the new version still hasn't been enabled on stable Rust, since the Polonius implementation is seen as far too slow for larger programs. (I'm not exactly sure how horrible it really is, I haven't looked at the numbers.) A big goal of the types team since last year has been to reimplement a faster version within rustc [2].
I'd count this as a language feature (albeit a relatively minor one) that's been greatly deferred in favor of shorter compile times.
[0] https://blog.rust-lang.org/inside-rust/2023/10/06/polonius-u...
[1] https://github.com/rust-lang/rust/pull/51133
[2] https://rust-lang.github.io/rust-project-goals/2024h2/Poloni...