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