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