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