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On harmful overuse of std::move - The Old New Thing
(devblogs.microsoft.com)
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this post was submitted on 25 Nov 2023
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In Rust, making something copyable is always explicit. I like that a lot.
Cpp should have done ref by default and had & for copy, but here we are.
That would defeat the goal of making it backwards-compatible with C.
Copy has a very different meaning between the two languages. In rust the equivalent of a c++ copy is a clone() call for anything non trivial
...which is also explicit.
@BatmanAoD @Miaou It is just what you are used to.
In C++ everything is a copy. Sometimes the compiler optimizes it away. clang-tidy may help. Having a clone() is very C-like.
That's a common idiom but the default behaviour is still implicit copy, which, with VLAs and no smart pointers, makes things arguably worse than in c++
I thought that was obvious as I mentioned a function call, but yes indeed