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