Enum aws_sdk_s3::types::ReplicationTimeStatus
source · #[non_exhaustive]pub enum ReplicationTimeStatus {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ReplicationTimeStatus
, 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 replicationtimestatus = unimplemented!();
match replicationtimestatus {
ReplicationTimeStatus::Disabled => { /* ... */ },
ReplicationTimeStatus::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when replicationtimestatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ReplicationTimeStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ReplicationTimeStatus::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 ReplicationTimeStatus::NewFeature
is defined.
Specifically, when replicationtimestatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ReplicationTimeStatus::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
. 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 ReplicationTimeStatus
impl ReplicationTimeStatus
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 ReplicationTimeStatus
impl AsRef<str> for ReplicationTimeStatus
source§impl Clone for ReplicationTimeStatus
impl Clone for ReplicationTimeStatus
source§fn clone(&self) -> ReplicationTimeStatus
fn clone(&self) -> ReplicationTimeStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ReplicationTimeStatus
impl Debug for ReplicationTimeStatus
source§impl Display for ReplicationTimeStatus
impl Display for ReplicationTimeStatus
source§impl From<&str> for ReplicationTimeStatus
impl From<&str> for ReplicationTimeStatus
source§impl FromStr for ReplicationTimeStatus
impl FromStr for ReplicationTimeStatus
source§impl Hash for ReplicationTimeStatus
impl Hash for ReplicationTimeStatus
source§impl Ord for ReplicationTimeStatus
impl Ord for ReplicationTimeStatus
source§fn cmp(&self, other: &ReplicationTimeStatus) -> Ordering
fn cmp(&self, other: &ReplicationTimeStatus) -> 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 ReplicationTimeStatus
impl PartialEq for ReplicationTimeStatus
source§impl PartialOrd for ReplicationTimeStatus
impl PartialOrd for ReplicationTimeStatus
impl Eq for ReplicationTimeStatus
impl StructuralPartialEq for ReplicationTimeStatus
Auto Trait Implementations§
impl Freeze for ReplicationTimeStatus
impl RefUnwindSafe for ReplicationTimeStatus
impl Send for ReplicationTimeStatus
impl Sync for ReplicationTimeStatus
impl Unpin for ReplicationTimeStatus
impl UnwindSafe for ReplicationTimeStatus
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
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.