Traits now support async fn and -> impl Trait (with some limitations), the compiler got faster, version = in Cargo.toml is now optional, and many small functions have been stabilized!
Traits now support async fn and -> impl Trait (with some limitations), the compiler got faster, version = in Cargo.toml is now optional, and many small functions have been stabilized!
Honestly the only things that are similar to C++ are small amounts of C-like syntax, RAII, smart pointers, and iterators. And even so, Rust improves those features a lot. The list of things that Rust rejects from C++ is much larger; Rust does not have:
newanddelete(perhaps discouraged in modern C++)Resultvalues)Rust does OOP very differently and leans harder into functional paradigms.
You could argue that C++'s new is Rust’s Box::new, and delete is replaced by RAII. Same concepts but way better ergonomy.
box::new is pretty directly analogous to std::make_unique (factory for unique_ptr), in general rust’s heap allocating types map to c++’s smart pointer types, which are basically universally recommended over raw new/delete. So another column where rust just gives you the one best C++ feature where it still has 4 supported versions.