this post was submitted on 21 Oct 2024
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Programming

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[–] zygo_histo_morpheus@programming.dev 31 points 1 month ago (11 children)

I'm a bit skeptical that a borrow checker in C++ can be as powerful as in rust, since C++ doesn't have lifetime annotations. Without lifetime annotations, you have to do a whole program analysis to get the equivalent checks which isn't even possible if you're e.g. loading dynamic libraries, and prohibitively slow otherwise. Without that you can only really do local analysis which is of course good but not that powerful.

Lifetime annotations in the type system is the right call, since it allows library authors to impose invariants related to ownership on their consumers. I doubt C++ will add it to their typesystem though.

[–] hunger@programming.dev 30 points 1 month ago (10 children)

Read the proposal: Lifetimes annotations, the rust standard library (incl. basic types like Vec, ARc, ...), first class tuples, pattern matching, destructive moves, unsafe, it is all in there.

The proposal is really to bolt on Rust to the side of C++, with all the compatibility problems that brings by necessity.

[–] Traister101 9 points 1 month ago (3 children)

Gonna need to start calling it C++++ at this point. So much extra shit in the standard library

[–] bruhduh@lemmy.world 13 points 1 month ago (2 children)

C# be like, am i a joke to you?

[–] Ephera@lemmy.ml 14 points 1 month ago

I'm not sure, C# wants to hear the response to this...

[–] Valmond@lemmy.world 9 points 1 month ago
[–] MonkderVierte@lemmy.ml 6 points 1 month ago (1 children)

Honestly, i prefer that over minimal standard libraries where you need dotzens of changing depencies for the simplest stuff.

[–] Traister101 6 points 1 month ago (1 children)

Nah standard libraries are great but C++ has a lot of... cruft. Maybe don't plonk a lot of Rust in there despite all the positives

[–] MonkderVierte@lemmy.ml 2 points 1 month ago

Sure, not saying C++ isn't cluttered.

[–] hunger@programming.dev 1 points 1 month ago

Well, its a brand new standard library. A fresh start.

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