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