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