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