3 ms·

members of a const struct are also const. Now you obviously can still have escape hatches and cast the const away whenever you want.

• wtetzner 10mo ago
  > members of a const struct are also const. Yes, but if your struct contains references, the constness doesn't apply to what those references point to. In Rust it does.
  • mgaunard 10mo ago
    For pointers, const only affects whether you can re-set it to point to something else, not the pointee. Nothing prevents you from building a smart pointer with those semantics though, std::indirect is an example of this (arguably closer to Rust's Box).
    • wtetzner 10mo ago
      Sure, but my point is that the semantics between C++ and Rust are different, and are therefore not an exact match as the article stated.
      • mgaunard 10mo ago
        In C++, you define the semantics yourself.
        • wtetzner 10mo ago
          No, const semantics are defined by the language definition.
          • mgaunard 10mo ago
            It's defined by whatever you put in your const overloads. const is primarily a type annotation that affects overload resolution. You must be confused because Rust has no overloading to begin with.