#[non_exhaustive]pub enum EncapsulationAlgorithmSpec {
MlKem,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against EncapsulationAlgorithmSpec, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let encapsulationalgorithmspec = unimplemented!();
match encapsulationalgorithmspec {
EncapsulationAlgorithmSpec::MlKem => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}The above code demonstrates that when encapsulationalgorithmspec represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant EncapsulationAlgorithmSpec::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
EncapsulationAlgorithmSpec::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str on it yields "NewFeature".
This match expression is forward-compatible when executed with a newer
version of SDK where the variant EncapsulationAlgorithmSpec::NewFeature is defined.
Specifically, when encapsulationalgorithmspec represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on EncapsulationAlgorithmSpec::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
MlKem
Unknown(UnknownVariantValue)
Don’t directly match on Unknown. See the docs on this enum for the correct way to handle unknown variants.
Unknown contains new variants that have been added since this code was generated.
Implementations§
Source§impl EncapsulationAlgorithmSpec
impl EncapsulationAlgorithmSpec
Sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
Source§impl AsRef<str> for EncapsulationAlgorithmSpec
impl AsRef<str> for EncapsulationAlgorithmSpec
Source§impl Clone for EncapsulationAlgorithmSpec
impl Clone for EncapsulationAlgorithmSpec
Source§fn clone(&self) -> EncapsulationAlgorithmSpec
fn clone(&self) -> EncapsulationAlgorithmSpec
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for EncapsulationAlgorithmSpec
impl Debug for EncapsulationAlgorithmSpec
Source§impl Display for EncapsulationAlgorithmSpec
impl Display for EncapsulationAlgorithmSpec
impl Eq for EncapsulationAlgorithmSpec
Source§impl From<&str> for EncapsulationAlgorithmSpec
impl From<&str> for EncapsulationAlgorithmSpec
Source§impl FromStr for EncapsulationAlgorithmSpec
impl FromStr for EncapsulationAlgorithmSpec
Source§impl Hash for EncapsulationAlgorithmSpec
impl Hash for EncapsulationAlgorithmSpec
Source§impl Ord for EncapsulationAlgorithmSpec
impl Ord for EncapsulationAlgorithmSpec
Source§fn cmp(&self, other: &EncapsulationAlgorithmSpec) -> Ordering
fn cmp(&self, other: &EncapsulationAlgorithmSpec) -> Ordering
1.21.0 (const: unstable) · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
1.21.0 (const: unstable) · Source§fn min(self, other: Self) -> Selfwhere
Self: Sized,
fn min(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl PartialOrd for EncapsulationAlgorithmSpec
impl PartialOrd for EncapsulationAlgorithmSpec
impl StructuralPartialEq for EncapsulationAlgorithmSpec
Auto Trait Implementations§
impl Freeze for EncapsulationAlgorithmSpec
impl RefUnwindSafe for EncapsulationAlgorithmSpec
impl Send for EncapsulationAlgorithmSpec
impl Sync for EncapsulationAlgorithmSpec
impl Unpin for EncapsulationAlgorithmSpec
impl UnsafeUnpin for EncapsulationAlgorithmSpec
impl UnwindSafe for EncapsulationAlgorithmSpec
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more