alt Hacker NewsUnless you use `dyn`, all code is monomorphized, and that code on its own will get optimized.
This does come with code-bloat. So the Rust std sometimes exposes a generic function (which gets monomorphized), but internally passes it off to a non-generic function.
This to avoid that the underlying code gets monomorphized.
https://github.com/rust-lang/rust/blob/8c52f735abd1af9a73941...
> This does come with code-bloat. So the Rust std sometimes exposes a generic function (which gets monomorphized), but internally passes it off to a non-generic function.
There's no free lunch here. Reducing the amount of code that's monomorphised reduces the code emitted & improves compile times, but it reduces the scope of the code that's exposed to the input type, which reduces optimisation opportunities.