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