this post was submitted on 17 Sep 2024
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The problem with c++ is that it allows people to do whatever they want. Turns out: people are dumb. Rust solved that problem. Nothing more, nothing less.
Rust still allows people to do (basically) whatever they want via unsafe blocks.
Sure, but you have to explicitly enable this feature. In c++ you can use the oldest shit from twenty years ago and your compiler happily does its job. All my c++ books are full of "you shouldn’t use xy as it is deemed unsafe now, but of course you still can".
If a "safe C++" proposal truly proposes a safe subset, then yes your C++ code would have to opt-in to doing unsafe things. For the purposes of this discussion of a safe subset ... the point is moot.
It's not moot. The Safe C++ is opt-in to safety. It has to be because otherwise it wouldn't be compatible with existing C++.
That's a laudable difference /s. Using Rust is also an "opt-in" option.