Enum aws_sdk_m2::types::DeploymentLifecycle
source · #[non_exhaustive]pub enum DeploymentLifecycle {
Deploying,
Failed,
Succeeded,
DeployUpdate,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DeploymentLifecycle
, 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 deploymentlifecycle = unimplemented!();
match deploymentlifecycle {
DeploymentLifecycle::Deploying => { /* ... */ },
DeploymentLifecycle::Failed => { /* ... */ },
DeploymentLifecycle::Succeeded => { /* ... */ },
DeploymentLifecycle::DeployUpdate => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when deploymentlifecycle
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DeploymentLifecycle::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DeploymentLifecycle::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 DeploymentLifecycle::NewFeature
is defined.
Specifically, when deploymentlifecycle
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DeploymentLifecycle::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
Deploying
Failed
Succeeded
DeployUpdate
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 DeploymentLifecycle
impl DeploymentLifecycle
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 DeploymentLifecycle
impl AsRef<str> for DeploymentLifecycle
source§impl Clone for DeploymentLifecycle
impl Clone for DeploymentLifecycle
source§fn clone(&self) -> DeploymentLifecycle
fn clone(&self) -> DeploymentLifecycle
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for DeploymentLifecycle
impl Debug for DeploymentLifecycle
source§impl From<&str> for DeploymentLifecycle
impl From<&str> for DeploymentLifecycle
source§impl FromStr for DeploymentLifecycle
impl FromStr for DeploymentLifecycle
source§impl Hash for DeploymentLifecycle
impl Hash for DeploymentLifecycle
source§impl Ord for DeploymentLifecycle
impl Ord for DeploymentLifecycle
source§fn cmp(&self, other: &DeploymentLifecycle) -> Ordering
fn cmp(&self, other: &DeploymentLifecycle) -> 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 DeploymentLifecycle
impl PartialEq for DeploymentLifecycle
source§fn eq(&self, other: &DeploymentLifecycle) -> bool
fn eq(&self, other: &DeploymentLifecycle) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for DeploymentLifecycle
impl PartialOrd for DeploymentLifecycle
source§fn partial_cmp(&self, other: &DeploymentLifecycle) -> Option<Ordering>
fn partial_cmp(&self, other: &DeploymentLifecycle) -> 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 DeploymentLifecycle
impl StructuralEq for DeploymentLifecycle
impl StructuralPartialEq for DeploymentLifecycle
Auto Trait Implementations§
impl RefUnwindSafe for DeploymentLifecycle
impl Send for DeploymentLifecycle
impl Sync for DeploymentLifecycle
impl Unpin for DeploymentLifecycle
impl UnwindSafe for DeploymentLifecycle
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
§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.