Hi Rust-Dev,
I have recently (using the latest rust from github) encountered some new
warnings about "implicitly copying a non-implicitly-copyable value". I
believe this is due to the fix for
https://github.com/mozilla/rust/issues/2450.
This warning seems to pop up all over the place because, as the bug
points out, vecs/strs are in-fact copied rather a lot (at least in the
rust I have written). I think that in some places I can restructure the
code to avoid copies, but that still leaves many places where I guess I
need to either add a `copy` or just ignore the warning (or turn it off).
I am worried that I will have to litter my code with `copy`.
The bug above mentions that the warning has been disabled for
[Mozilla's] existing projects. So my question is: what is the long-term
plan here? Will Mozilla's projects be restructured to avoid copying
strs/vecs, or to add `copy` where it is not possible? Will the new
vecs/strs make this a non-issue somehow (are vecs/strs still unique in
the new scheme?)?
Please help me be less confused.
Thanks
Gareth
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