Announcing Rust 1.79.0
Announcing Rust 1.79.0
blog.rust-lang.org
Announcing Rust 1.79.0 | Rust Blog
3 comments
-
How does the
const { None }example type-inference work? The size of the option type can't be known without knowing the type of theSomevariant.Edit: aha, it doesn't work as-is. It needs to infer the type of elements of
foofrom usage. https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=05a95c592626b6935ae812527aa6bbc6
-
I don't understand what the advantages of const expressions are.
Isn't
const { None }the same as justNone?-
const expressions are evaluated at compile time and can be used in locations where you would have to otherwise specify a literal (or something that amounts to a named literal like a const value).
-