alt Hacker NewsWould you say Rust is more complicated than C++, or just harder to write? I think that complication a la C++ where there are too many features for the language's own good is a different problem than being a clean language but with higher order features that require a bit more, I don't know, focus?
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I think there are certainly different complications in Rust than C++. The RAII can be roughly the same in the naive sense, but there's having to worry about Send and Sync and Pin and fighting with the borrow checker and all that fun stuff.
Gauging how "complicated" a language is somewhat subjective, so it's kind of hard for me to give a straightforward answer. I think it's certainly easier to be (some definition of) productive with C++ than with Rust. I feel like to do anything even remotely non-trivial with Rust, you kind of have to understand everything, because if you don't do it in the "Rust way", it often won't compile. I think this is a good thing, but it does make it harder to get started.
C++ has a lot less consistency and (kind of) more features, and lots of strange semantics to go with those features, and so if people actually use them it can get confusing and hard to read pretty quickly.
My knowledge is a bit out of date, to be clear; previously whenever I need something in the C++ domain, I could fairly easily just reach for C and use that instead. Now Rust is available and I think overall better (though I do sometimes miss how utterly simple and dumb C is).
I make a strong distinction between complexity, the inherent amount of moving parts in a thing, versus complication, the amount of frippery involved in dealing with the complexity.
Rust is complex. It's solving complex problems. It's not complicated, though. There's not much you could remove without creating leaky abstractions.
In my opinion, C++ is equally complex. It's solving the same kinds of problems as Rust (although it'd be fairer to say "Rust is solving the same problems as C++"). However, it's hella complicated. There's a vast number of twists and turns to keep in mind if you want to use it, and most of them are things you could not have anticipated by reasoning about it from first principles.
If you took the design goals of Rust, and reinvented it from scratch, it'd probably end up looking a lot like Rust. If you were to reinvent C++ from scratch, I bet it wouldn't remotely resemble modern C++. If anything, I bet it would also end up looking like Rust, and the fractal of powerful footguns would be left on the cutting room floor because "that's insane, there's no way anyone would want that".