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