Define a TryClone trait for cloning with fallible allocation
#12519
Conversation
| A, B, C, D, E, F, G, H; | ||
| A, B, C, D, E, F, G, H, I; | ||
| A, B, C, D, E, F, G, H, I, J; | ||
| } |
There was a problem hiding this comment.
Could this perhaps be impl<T: Copy> TryClone for T?
There was a problem hiding this comment.
FWIW, we would still need these implementations for tuples even with that blanket impl, so that something like (Box<usize>, Vec<u8>), which is not Copy, could still implement TryClone.
I did try to implement TryClone for all T: Copy and ran into conflicting trait impls. I guess because (T0, T1) might be Copy and Rust doesn't know whether to use the blanket Copy impl or the where T0: TryClone, T1: TryClone impl?
There was a problem hiding this comment.
(Enqueuing to merge now, if you know of a way to resolve this issue, we can do it in a follow up.)
There was a problem hiding this comment.
Ah yeah I thought coherence wouldn't trip up here but it's definitely tripping up, so definitely not possible
2 participants
Part of #12069