Enum aws_sdk_backup::types::RecoveryPointStatus
source · #[non_exhaustive]
pub enum RecoveryPointStatus {
Completed,
Deleting,
Expired,
Partial,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against RecoveryPointStatus
, 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 recoverypointstatus = unimplemented!();
match recoverypointstatus {
RecoveryPointStatus::Completed => { /* ... */ },
RecoveryPointStatus::Deleting => { /* ... */ },
RecoveryPointStatus::Expired => { /* ... */ },
RecoveryPointStatus::Partial => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when recoverypointstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RecoveryPointStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
RecoveryPointStatus::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 RecoveryPointStatus::NewFeature
is defined.
Specifically, when recoverypointstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on RecoveryPointStatus::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
Completed
Deleting
Expired
Partial
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for RecoveryPointStatus
impl AsRef<str> for RecoveryPointStatus
source§impl Clone for RecoveryPointStatus
impl Clone for RecoveryPointStatus
source§fn clone(&self) -> RecoveryPointStatus
fn clone(&self) -> RecoveryPointStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RecoveryPointStatus
impl Debug for RecoveryPointStatus
source§impl From<&str> for RecoveryPointStatus
impl From<&str> for RecoveryPointStatus
source§impl FromStr for RecoveryPointStatus
impl FromStr for RecoveryPointStatus
source§impl Hash for RecoveryPointStatus
impl Hash for RecoveryPointStatus
source§impl Ord for RecoveryPointStatus
impl Ord for RecoveryPointStatus
source§fn cmp(&self, other: &RecoveryPointStatus) -> Ordering
fn cmp(&self, other: &RecoveryPointStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<RecoveryPointStatus> for RecoveryPointStatus
impl PartialEq<RecoveryPointStatus> for RecoveryPointStatus
source§fn eq(&self, other: &RecoveryPointStatus) -> bool
fn eq(&self, other: &RecoveryPointStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<RecoveryPointStatus> for RecoveryPointStatus
impl PartialOrd<RecoveryPointStatus> for RecoveryPointStatus
source§fn partial_cmp(&self, other: &RecoveryPointStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &RecoveryPointStatus) -> 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 RecoveryPointStatus
impl StructuralEq for RecoveryPointStatus
impl StructuralPartialEq for RecoveryPointStatus
Auto Trait Implementations§
impl RefUnwindSafe for RecoveryPointStatus
impl Send for RecoveryPointStatus
impl Sync for RecoveryPointStatus
impl Unpin for RecoveryPointStatus
impl UnwindSafe for RecoveryPointStatus
Blanket Implementations§
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.