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