#[non_exhaustive]pub enum AmdSevSnpSpecification {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against AmdSevSnpSpecification, 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 amdsevsnpspecification = unimplemented!();
match amdsevsnpspecification {
AmdSevSnpSpecification::Disabled => { /* ... */ },
AmdSevSnpSpecification::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}The above code demonstrates that when amdsevsnpspecification represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AmdSevSnpSpecification::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
AmdSevSnpSpecification::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 AmdSevSnpSpecification::NewFeature is defined.
Specifically, when amdsevsnpspecification represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on AmdSevSnpSpecification::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
Disabled
Enabled
Unknown(UnknownVariantValue)
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 AmdSevSnpSpecification
impl AmdSevSnpSpecification
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 AmdSevSnpSpecification
impl AsRef<str> for AmdSevSnpSpecification
Source§impl Clone for AmdSevSnpSpecification
impl Clone for AmdSevSnpSpecification
Source§fn clone(&self) -> AmdSevSnpSpecification
fn clone(&self) -> AmdSevSnpSpecification
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for AmdSevSnpSpecification
impl Debug for AmdSevSnpSpecification
Source§impl Display for AmdSevSnpSpecification
impl Display for AmdSevSnpSpecification
Source§impl From<&str> for AmdSevSnpSpecification
impl From<&str> for AmdSevSnpSpecification
Source§impl FromStr for AmdSevSnpSpecification
impl FromStr for AmdSevSnpSpecification
Source§impl Hash for AmdSevSnpSpecification
impl Hash for AmdSevSnpSpecification
Source§impl Ord for AmdSevSnpSpecification
impl Ord for AmdSevSnpSpecification
Source§fn cmp(&self, other: &AmdSevSnpSpecification) -> Ordering
fn cmp(&self, other: &AmdSevSnpSpecification) -> Ordering
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl PartialEq for AmdSevSnpSpecification
impl PartialEq for AmdSevSnpSpecification
Source§impl PartialOrd for AmdSevSnpSpecification
impl PartialOrd for AmdSevSnpSpecification
impl Eq for AmdSevSnpSpecification
impl StructuralPartialEq for AmdSevSnpSpecification
Auto Trait Implementations§
impl Freeze for AmdSevSnpSpecification
impl RefUnwindSafe for AmdSevSnpSpecification
impl Send for AmdSevSnpSpecification
impl Sync for AmdSevSnpSpecification
impl Unpin for AmdSevSnpSpecification
impl UnwindSafe for AmdSevSnpSpecification
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