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