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