The following is from a comment on another website:
[In] Rust, they [generics] are [monomorphized] by default, but there’s a
dynamicattribute that you can stick on them to ensure that they are not. In the dynamic case, the compiler generates a small vtable with functions implementing all of the dispatch required by the generic.
I've not heard of a
#[dynamic] attribute that changes trait dispatch, nor do I see one in the Reference. At first I figured this comment may have been referring to trait objects and their
dyn keyword, but a subsequent comment seems to imply that this "
dynamic attribute" can be applied (to functions?) without changing a library's API, which I don't think matches
dyn. What is the "