pub enum SseKmsEncryptedObjectsStatus {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against SseKmsEncryptedObjectsStatus
, 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 ssekmsencryptedobjectsstatus = unimplemented!();
match ssekmsencryptedobjectsstatus {
SseKmsEncryptedObjectsStatus::Disabled => { /* ... */ },
SseKmsEncryptedObjectsStatus::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when ssekmsencryptedobjectsstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant SseKmsEncryptedObjectsStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
SseKmsEncryptedObjectsStatus::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 SseKmsEncryptedObjectsStatus::NewFeature
is defined.
Specifically, when ssekmsencryptedobjectsstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on SseKmsEncryptedObjectsStatus::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is 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
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
§impl AsRef<str> for SseKmsEncryptedObjectsStatus
impl AsRef<str> for SseKmsEncryptedObjectsStatus
§impl Clone for SseKmsEncryptedObjectsStatus
impl Clone for SseKmsEncryptedObjectsStatus
§fn clone(&self) -> SseKmsEncryptedObjectsStatus
fn clone(&self) -> SseKmsEncryptedObjectsStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more§impl Debug for SseKmsEncryptedObjectsStatus
impl Debug for SseKmsEncryptedObjectsStatus
§impl From<&str> for SseKmsEncryptedObjectsStatus
impl From<&str> for SseKmsEncryptedObjectsStatus
§fn from(s: &str) -> SseKmsEncryptedObjectsStatus
fn from(s: &str) -> SseKmsEncryptedObjectsStatus
§impl FromStr for SseKmsEncryptedObjectsStatus
impl FromStr for SseKmsEncryptedObjectsStatus
§type Err = Infallible
type Err = Infallible
§fn from_str(
s: &str
) -> Result<SseKmsEncryptedObjectsStatus, <SseKmsEncryptedObjectsStatus as FromStr>::Err>
fn from_str( s: &str ) -> Result<SseKmsEncryptedObjectsStatus, <SseKmsEncryptedObjectsStatus as FromStr>::Err>
s
to return a value of this type. Read more§impl Hash for SseKmsEncryptedObjectsStatus
impl Hash for SseKmsEncryptedObjectsStatus
§impl Ord for SseKmsEncryptedObjectsStatus
impl Ord for SseKmsEncryptedObjectsStatus
§fn cmp(&self, other: &SseKmsEncryptedObjectsStatus) -> Ordering
fn cmp(&self, other: &SseKmsEncryptedObjectsStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
§impl PartialEq<SseKmsEncryptedObjectsStatus> for SseKmsEncryptedObjectsStatus
impl PartialEq<SseKmsEncryptedObjectsStatus> for SseKmsEncryptedObjectsStatus
§fn eq(&self, other: &SseKmsEncryptedObjectsStatus) -> bool
fn eq(&self, other: &SseKmsEncryptedObjectsStatus) -> bool
self
and other
values to be equal, and is used
by ==
.§impl PartialOrd<SseKmsEncryptedObjectsStatus> for SseKmsEncryptedObjectsStatus
impl PartialOrd<SseKmsEncryptedObjectsStatus> for SseKmsEncryptedObjectsStatus
§fn partial_cmp(&self, other: &SseKmsEncryptedObjectsStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &SseKmsEncryptedObjectsStatus) -> 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 SseKmsEncryptedObjectsStatus
impl StructuralEq for SseKmsEncryptedObjectsStatus
impl StructuralPartialEq for SseKmsEncryptedObjectsStatus
Auto Trait Implementations§
impl RefUnwindSafe for SseKmsEncryptedObjectsStatus
impl Send for SseKmsEncryptedObjectsStatus
impl Sync for SseKmsEncryptedObjectsStatus
impl Unpin for SseKmsEncryptedObjectsStatus
impl UnwindSafe for SseKmsEncryptedObjectsStatus
Blanket Implementations§
§impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere
T: 'a,
impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere T: 'a,
§impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere
T: 'a,
impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere T: 'a,
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<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,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.§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.