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