#[non_exhaustive]pub enum EarthObservationJobStatus {
Completed,
Deleted,
Deleting,
Failed,
Initializing,
InProgress,
Stopped,
Stopping,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against EarthObservationJobStatus
, 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 earthobservationjobstatus = unimplemented!();
match earthobservationjobstatus {
EarthObservationJobStatus::Completed => { /* ... */ },
EarthObservationJobStatus::Deleted => { /* ... */ },
EarthObservationJobStatus::Deleting => { /* ... */ },
EarthObservationJobStatus::Failed => { /* ... */ },
EarthObservationJobStatus::Initializing => { /* ... */ },
EarthObservationJobStatus::InProgress => { /* ... */ },
EarthObservationJobStatus::Stopped => { /* ... */ },
EarthObservationJobStatus::Stopping => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when earthobservationjobstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant EarthObservationJobStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
EarthObservationJobStatus::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 EarthObservationJobStatus::NewFeature
is defined.
Specifically, when earthobservationjobstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on EarthObservationJobStatus::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
Completed
COMPLETED
Deleted
DELETED
Deleting
DELETING
Failed
FAILED
Initializing
INITIALIZING
InProgress
IN_PROGRESS
Stopped
STOPPED
Stopping
STOPPING
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 EarthObservationJobStatus
impl EarthObservationJobStatus
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 EarthObservationJobStatus
impl AsRef<str> for EarthObservationJobStatus
source§impl Clone for EarthObservationJobStatus
impl Clone for EarthObservationJobStatus
source§fn clone(&self) -> EarthObservationJobStatus
fn clone(&self) -> EarthObservationJobStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for EarthObservationJobStatus
impl Debug for EarthObservationJobStatus
source§impl From<&str> for EarthObservationJobStatus
impl From<&str> for EarthObservationJobStatus
source§impl FromStr for EarthObservationJobStatus
impl FromStr for EarthObservationJobStatus
source§impl Hash for EarthObservationJobStatus
impl Hash for EarthObservationJobStatus
source§impl Ord for EarthObservationJobStatus
impl Ord for EarthObservationJobStatus
source§fn cmp(&self, other: &EarthObservationJobStatus) -> Ordering
fn cmp(&self, other: &EarthObservationJobStatus) -> 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 EarthObservationJobStatus
impl PartialEq for EarthObservationJobStatus
source§fn eq(&self, other: &EarthObservationJobStatus) -> bool
fn eq(&self, other: &EarthObservationJobStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for EarthObservationJobStatus
impl PartialOrd for EarthObservationJobStatus
source§fn partial_cmp(&self, other: &EarthObservationJobStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &EarthObservationJobStatus) -> 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 EarthObservationJobStatus
impl StructuralEq for EarthObservationJobStatus
impl StructuralPartialEq for EarthObservationJobStatus
Auto Trait Implementations§
impl RefUnwindSafe for EarthObservationJobStatus
impl Send for EarthObservationJobStatus
impl Sync for EarthObservationJobStatus
impl Unpin for EarthObservationJobStatus
impl UnwindSafe for EarthObservationJobStatus
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
§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,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§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,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.