impl Copy for NoSend/NoSync
#19860
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impl Copy for NoSend/NoSync
#19860
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bors
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impl `Copy` for `NoSend`/`NoSync` Reviewed-by: alexcrichton
bors
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Dec 16, 2014
Using a type alias for iterator implementations is fragile since this exposes the implementation to users of the iterator, and any changes could break existing code. This commit changes the iterators of `VecMap` to use proper new types, rather than type aliases. However, since it is fair-game to treat a type-alias as the aliased type, this is a: [breaking-change].
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impl `Copy` for `NoSend`/`NoSync` Reviewed-by: alexcrichton
brson
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Necessary to implement `Copy` on structs like this one:
``` rust
struct Slice<'a, T> {
_contravariant: marker::ContravariantLifetime<'a>,
_nosend: marker::NoSend,
data: *const T,
length: uint,
}
```
r? @alexcrichton
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impl `Copy` for `NoSend`/`NoSync` Reviewed-by: alexcrichton
alexcrichton
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Necessary to implement `Copy` on structs like this one:
``` rust
struct Slice<'a, T> {
_contravariant: marker::ContravariantLifetime<'a>,
_nosend: marker::NoSend,
data: *const T,
length: uint,
}
```
r? @alexcrichton
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Necessary to implement
Copyon structs like this one:r? @alexcrichton