#[non_exhaustive]pub enum FeatureAdditionalConfiguration {
EksAddonManagement,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against FeatureAdditionalConfiguration, 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 featureadditionalconfiguration = unimplemented!();
match featureadditionalconfiguration {
FeatureAdditionalConfiguration::EksAddonManagement => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when featureadditionalconfiguration represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant FeatureAdditionalConfiguration::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
FeatureAdditionalConfiguration::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 FeatureAdditionalConfiguration::NewFeature is defined.
Specifically, when featureadditionalconfiguration represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on FeatureAdditionalConfiguration::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
EksAddonManagement
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 FeatureAdditionalConfiguration
impl FeatureAdditionalConfiguration
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 FeatureAdditionalConfiguration
impl AsRef<str> for FeatureAdditionalConfiguration
source§impl Clone for FeatureAdditionalConfiguration
impl Clone for FeatureAdditionalConfiguration
source§fn clone(&self) -> FeatureAdditionalConfiguration
fn clone(&self) -> FeatureAdditionalConfiguration
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 FeatureAdditionalConfiguration
impl From<&str> for FeatureAdditionalConfiguration
source§impl Ord for FeatureAdditionalConfiguration
impl Ord for FeatureAdditionalConfiguration
source§fn cmp(&self, other: &FeatureAdditionalConfiguration) -> Ordering
fn cmp(&self, other: &FeatureAdditionalConfiguration) -> 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 FeatureAdditionalConfiguration
impl PartialEq for FeatureAdditionalConfiguration
source§fn eq(&self, other: &FeatureAdditionalConfiguration) -> bool
fn eq(&self, other: &FeatureAdditionalConfiguration) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for FeatureAdditionalConfiguration
impl PartialOrd for FeatureAdditionalConfiguration
source§fn partial_cmp(
&self,
other: &FeatureAdditionalConfiguration
) -> Option<Ordering>
fn partial_cmp( &self, other: &FeatureAdditionalConfiguration ) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self and other) and is used by the <=
operator. Read moreimpl Eq for FeatureAdditionalConfiguration
impl StructuralEq for FeatureAdditionalConfiguration
impl StructuralPartialEq for FeatureAdditionalConfiguration
Auto Trait Implementations§
impl RefUnwindSafe for FeatureAdditionalConfiguration
impl Send for FeatureAdditionalConfiguration
impl Sync for FeatureAdditionalConfiguration
impl Unpin for FeatureAdditionalConfiguration
impl UnwindSafe for FeatureAdditionalConfiguration
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
§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.