Enum aws_sdk_connect::types::StorageType
source · #[non_exhaustive]pub enum StorageType {
KinesisFirehose,
KinesisStream,
KinesisVideoStream,
S3,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against StorageType
, 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 storagetype = unimplemented!();
match storagetype {
StorageType::KinesisFirehose => { /* ... */ },
StorageType::KinesisStream => { /* ... */ },
StorageType::KinesisVideoStream => { /* ... */ },
StorageType::S3 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when storagetype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant StorageType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
StorageType::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 StorageType::NewFeature
is defined.
Specifically, when storagetype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on StorageType::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
KinesisFirehose
KinesisStream
KinesisVideoStream
S3
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for StorageType
impl AsRef<str> for StorageType
source§impl Clone for StorageType
impl Clone for StorageType
source§fn clone(&self) -> StorageType
fn clone(&self) -> StorageType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for StorageType
impl Debug for StorageType
source§impl From<&str> for StorageType
impl From<&str> for StorageType
source§impl FromStr for StorageType
impl FromStr for StorageType
source§impl Hash for StorageType
impl Hash for StorageType
source§impl Ord for StorageType
impl Ord for StorageType
source§fn cmp(&self, other: &StorageType) -> Ordering
fn cmp(&self, other: &StorageType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<StorageType> for StorageType
impl PartialEq<StorageType> for StorageType
source§fn eq(&self, other: &StorageType) -> bool
fn eq(&self, other: &StorageType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<StorageType> for StorageType
impl PartialOrd<StorageType> for StorageType
source§fn partial_cmp(&self, other: &StorageType) -> Option<Ordering>
fn partial_cmp(&self, other: &StorageType) -> 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 StorageType
impl StructuralEq for StorageType
impl StructuralPartialEq for StorageType
Auto Trait Implementations§
impl RefUnwindSafe for StorageType
impl Send for StorageType
impl Sync for StorageType
impl Unpin for StorageType
impl UnwindSafe for StorageType
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<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.