On 20 November 2013 02:07, Ziad Hatahet <hata...@gmail.com> wrote: >> Personally I would prefer if & in Rust worked similar to const T& in c++ > > In that case, you would not be able to tell whether a function argument was > passed by value or by reference. I actually like this feature about Rust (C# > has it too with the `ref` keyword).
In the safe code there is no difference if the value is passed via a copy or as &T. Also as I learned recently the Rust compiler already optimizes &T parameters into T for small-sized T at --opt-level=3. So effectively &T parameter became a notation for the most efficient passing of arguments of type T. _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
