Is there a type for wrapping a T
, which provides Cow<'a, T>
-like functionality without the lifetime parameter? I imagine it would be implemented as a Either<Rc<T>, Box<T>>
, and you can get_mut
it to turn it into the box variant, and clone it cheaply as long as you haven't called get_mut
yet.
This is also mentioned in the documentation of Cow
. I know this because I’ve added the remark myself. I’d be curious why you didn’t see that / where else you might have looked instead.
I actually recalled that something like Rc::make_mut
existed and checked just after asking the question. I'm pretty sure I've already used it somewhere in my codebase already...
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