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!

  • tatterdemalion@programming.dev
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    10 months ago

    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:

    • new and delete (perhaps discouraged in modern C++)
    • function overloading
    • inheritance (replaced by composition or traits)
    • friend classes (replaced by modules)
    • exceptions (replaced by Result values)
    • 6 different kinds of first-class constructors (hallelujah)
    • templates (replaced by constrained parametric polymorphism)
    • variable mutability by default

    Rust does OOP very differently and leans harder into functional paradigms.

    • xav@programming.dev
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      10 months ago

      You could argue that C++'s new is Rust’s Box::new, and delete is replaced by RAII. Same concepts but way better ergonomy.