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