3 stable releases
Uses old Rust 2015
1.0.2 | Jul 16, 2019 |
---|---|
1.0.1 | Jun 22, 2019 |
1.0.0 | Jun 19, 2019 |
#10 in #deref
Used in ccl_owning_ref
13KB
64 lines
This is a fork of the original crate to enable some specific functionality. Contact me for questions or requests.
This crate defines an unsafe marker trait, StableDeref, for container types which deref to a fixed address which is valid even when the containing type is moved. For example, Box, Vec, Rc, Arc and String implement this trait. Additionally, it defines CloneStableDeref for types like Rc where clones deref to the same address.
It is intended to be used by crates such as owning_ref and rental, as well as library authors who wish to make their code interoperable with such crates. For example, if you write a custom Vec type, you can implement StableDeref, and then users will be able to use your custom Vec type together with owning_ref and rental.
no_std support can be enabled by disabling default features (specifically "std"). In this case, the trait will not be implemented for the std types mentioned above, but you can still use it for your own types.
Enable the "alloc" feature (with default-features disabled) to have this trait be implemented for the above types from the built-in alloc
crate, specifically
alloc::boxed::Box
alloc::vec::Vec
alloc::rc::Rc
alloc::arc::Arc
alloc::string::String
For example, this crate can be built with alloc support via the following command:
cargo build --no-default-features --features alloc
Or added as a Cargo.toml
dependency as follows:
[dependencies.stable_deref_trait]
version = "<version>"
default-features = false
features = [ "alloc" ]
Dependencies
~0.6–1MB
~14K SLoC