Enum aws_sdk_sms::types::ReplicationRunType
source · #[non_exhaustive]pub enum ReplicationRunType {
Automatic,
OnDemand,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ReplicationRunType
, 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 replicationruntype = unimplemented!();
match replicationruntype {
ReplicationRunType::Automatic => { /* ... */ },
ReplicationRunType::OnDemand => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when replicationruntype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ReplicationRunType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ReplicationRunType::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 ReplicationRunType::NewFeature
is defined.
Specifically, when replicationruntype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ReplicationRunType::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
Automatic
OnDemand
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 ReplicationRunType
impl ReplicationRunType
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 ReplicationRunType
impl AsRef<str> for ReplicationRunType
source§impl Clone for ReplicationRunType
impl Clone for ReplicationRunType
source§fn clone(&self) -> ReplicationRunType
fn clone(&self) -> ReplicationRunType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ReplicationRunType
impl Debug for ReplicationRunType
source§impl Display for ReplicationRunType
impl Display for ReplicationRunType
source§impl From<&str> for ReplicationRunType
impl From<&str> for ReplicationRunType
source§impl FromStr for ReplicationRunType
impl FromStr for ReplicationRunType
source§impl Hash for ReplicationRunType
impl Hash for ReplicationRunType
source§impl Ord for ReplicationRunType
impl Ord for ReplicationRunType
source§fn cmp(&self, other: &ReplicationRunType) -> Ordering
fn cmp(&self, other: &ReplicationRunType) -> 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 ReplicationRunType
impl PartialEq for ReplicationRunType
source§fn eq(&self, other: &ReplicationRunType) -> bool
fn eq(&self, other: &ReplicationRunType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ReplicationRunType
impl PartialOrd for ReplicationRunType
source§fn partial_cmp(&self, other: &ReplicationRunType) -> Option<Ordering>
fn partial_cmp(&self, other: &ReplicationRunType) -> 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 ReplicationRunType
impl StructuralPartialEq for ReplicationRunType
Auto Trait Implementations§
impl Freeze for ReplicationRunType
impl RefUnwindSafe for ReplicationRunType
impl Send for ReplicationRunType
impl Sync for ReplicationRunType
impl Unpin for ReplicationRunType
impl UnwindSafe for ReplicationRunType
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> 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.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more