Sylvain Wallez on Nostr: TIL on-stack dynamic dispatch in Rust. This works because the compiler inserts a flag ...

TIL on-stack dynamic dispatch in Rust. This works because the compiler inserts a flag to know whether it should drop the File object (checked with the Compiler Explorer). Pretty cool! #RustLang https://rust-unofficial.github.io/patterns/idioms/on-stack-dyn-dispatch.html