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