pub trait UniqueVersioned: Versioned {
// Required methods
fn as_unique_version(&self) -> &Self::LatestVersion;
fn as_unique_version_mut(&mut self) -> &mut Self::LatestVersion;
fn into_unique_version(self) -> Self::LatestVersion;
fn from_unique_version(unique_version: Self::LatestVersion) -> Self;
}Expand description
A trait for Versioned types which only have a single version.
This enables a number of special-cased methods to be implemented which are only possible when there is only one version.
Required Methods§
Sourcefn as_unique_version(&self) -> &Self::LatestVersion
fn as_unique_version(&self) -> &Self::LatestVersion
Returns an immutable reference to (currently) the only possible version of the inner content.
Sourcefn as_unique_version_mut(&mut self) -> &mut Self::LatestVersion
fn as_unique_version_mut(&mut self) -> &mut Self::LatestVersion
Returns a mutable reference to (currently) the only possible version of the inner content.
This is somewhat equivalent to in_place_fully_update_and_as_latest_version_mut, but doesn’t need to do
any updating, so can be used where logical correctness requires there to be a unique version,
requires no updating, or simply for slightly better performance.
Sourcefn into_unique_version(self) -> Self::LatestVersion
fn into_unique_version(self) -> Self::LatestVersion
Returns the (currently) only possible version of the inner content.
This is somewhat equivalent to fully_update_and_into_latest_version, but doesn’t need to do
any updating, so can be used where logical correctness requires there to be a unique version,
requires no updating, or simply for slightly better performance.
Sourcefn from_unique_version(unique_version: Self::LatestVersion) -> Self
fn from_unique_version(unique_version: Self::LatestVersion) -> Self
Creates the versioned wrapper from the (currently) only possible version.
This is equivalent to from_latest_version, but useful to use instead if your logic’s correctness
is dependent on there only being a single version. If another version gets added, this
method will give a compile error.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.