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