this post was submitted on 15 Jul 2023
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C++ does have the problem that references are not objects, which introduces many subtle issues. For example, you cannot use a type like
std::vector<int&>
, so that templated code will often have to invokestd::remove_reference<T>
and so on. Rust opts for a more consistent data model, but then introduces auto-deref (and the Deref trait) to get about the same usability C++ has with references andoperator->
. Note that C++ will implicitly chainoperator->
calls until a plain pointer is reached, whereas Rust will stop dereferencing once a type with a matching method/field is found. Having deep knowledge of both languages, I'm not convinced that C++ features "straightforward consistency" here…