#[non_exhaustive]pub enum PerObjectSyncStatus {
CapacityConstrained,
InSync,
Pending,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against PerObjectSyncStatus
, 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 perobjectsyncstatus = unimplemented!();
match perobjectsyncstatus {
PerObjectSyncStatus::CapacityConstrained => { /* ... */ },
PerObjectSyncStatus::InSync => { /* ... */ },
PerObjectSyncStatus::Pending => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when perobjectsyncstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant PerObjectSyncStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
PerObjectSyncStatus::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 PerObjectSyncStatus::NewFeature
is defined.
Specifically, when perobjectsyncstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on PerObjectSyncStatus::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
CapacityConstrained
InSync
Pending
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 PerObjectSyncStatus
impl PerObjectSyncStatus
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 PerObjectSyncStatus
impl AsRef<str> for PerObjectSyncStatus
source§impl Clone for PerObjectSyncStatus
impl Clone for PerObjectSyncStatus
source§fn clone(&self) -> PerObjectSyncStatus
fn clone(&self) -> PerObjectSyncStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for PerObjectSyncStatus
impl Debug for PerObjectSyncStatus
source§impl Display for PerObjectSyncStatus
impl Display for PerObjectSyncStatus
source§impl From<&str> for PerObjectSyncStatus
impl From<&str> for PerObjectSyncStatus
source§impl FromStr for PerObjectSyncStatus
impl FromStr for PerObjectSyncStatus
source§impl Hash for PerObjectSyncStatus
impl Hash for PerObjectSyncStatus
source§impl Ord for PerObjectSyncStatus
impl Ord for PerObjectSyncStatus
source§fn cmp(&self, other: &PerObjectSyncStatus) -> Ordering
fn cmp(&self, other: &PerObjectSyncStatus) -> 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 PerObjectSyncStatus
impl PartialEq for PerObjectSyncStatus
source§fn eq(&self, other: &PerObjectSyncStatus) -> bool
fn eq(&self, other: &PerObjectSyncStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for PerObjectSyncStatus
impl PartialOrd for PerObjectSyncStatus
source§fn partial_cmp(&self, other: &PerObjectSyncStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &PerObjectSyncStatus) -> 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 PerObjectSyncStatus
impl StructuralPartialEq for PerObjectSyncStatus
Auto Trait Implementations§
impl Freeze for PerObjectSyncStatus
impl RefUnwindSafe for PerObjectSyncStatus
impl Send for PerObjectSyncStatus
impl Sync for PerObjectSyncStatus
impl Unpin for PerObjectSyncStatus
impl UnwindSafe for PerObjectSyncStatus
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> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more