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by duneroadrunner
2715 days ago
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Yes, and in C++, linked lists can retain this property and be implemented in a memory safe way using non-owning reference-counting smart pointers[1]. Many defend the use of unsafe Rust in cases like these, in part by asserting that C++ would have the same (un)safety issue. I don't think that's right. A C++ implementation would not have to use (unsafe) raw pointers, or (expensive, intrusive) owning pointers from the standard library. I think C++ has the advantage in cases like these because of the aforementioned non-owning reference-counting smart pointers. I don't think the same type of pointer/reference can be implemented in Rust (as it would need a constructor), but it's not immediately obvious to me that such a reference type couldn't be added to the language as an intrinsic element (like Rc). I think such an element is dearly missing from the Rust language. I suspect that adding it would make the language safer and easier to use. [1] shameless plug: https://github.com/duneroadrunner/SaferCPlusPlus#norad-point... |
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