this post was submitted on 25 Nov 2023
30 points (96.9% liked)

C++

1760 readers
1 users here now

The center for all discussion and news regarding C++.

Rules

founded 1 year ago
MODERATORS
[email protected]
[email protected]
30
On harmful overuse of std::move - The Old New Thing (devblogs.microsoft.com)
submitted 11 months ago by [email protected] to c/[email protected]
22 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 3 points 11 months ago (1 children)

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

[–] [email protected] 3 points 11 months ago (2 children)

...which is also explicit.

[–] [email protected] 2 points 11 months ago (1 children)

@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.

[–] [email protected] 1 points 11 months ago* (last edited 11 months ago)

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++

[–] [email protected] 1 points 11 months ago

I thought that was obvious as I mentioned a function call, but yes indeed