#[non_exhaustive]pub enum M2ManagedActionType {
Configure,
Deconfigure,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against M2ManagedActionType, 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 m2managedactiontype = unimplemented!();
match m2managedactiontype {
M2ManagedActionType::Configure => { /* ... */ },
M2ManagedActionType::Deconfigure => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when m2managedactiontype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant M2ManagedActionType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
M2ManagedActionType::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 M2ManagedActionType::NewFeature is defined.
Specifically, when m2managedactiontype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on M2ManagedActionType::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis 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
Configure
Deconfigure
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 M2ManagedActionType
impl M2ManagedActionType
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 M2ManagedActionType
impl AsRef<str> for M2ManagedActionType
source§impl Clone for M2ManagedActionType
impl Clone for M2ManagedActionType
source§fn clone(&self) -> M2ManagedActionType
fn clone(&self) -> M2ManagedActionType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for M2ManagedActionType
impl Debug for M2ManagedActionType
source§impl Display for M2ManagedActionType
impl Display for M2ManagedActionType
source§impl From<&str> for M2ManagedActionType
impl From<&str> for M2ManagedActionType
source§impl FromStr for M2ManagedActionType
impl FromStr for M2ManagedActionType
source§impl Hash for M2ManagedActionType
impl Hash for M2ManagedActionType
source§impl Ord for M2ManagedActionType
impl Ord for M2ManagedActionType
source§fn cmp(&self, other: &M2ManagedActionType) -> Ordering
fn cmp(&self, other: &M2ManagedActionType) -> 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 M2ManagedActionType
impl PartialEq for M2ManagedActionType
source§fn eq(&self, other: &M2ManagedActionType) -> bool
fn eq(&self, other: &M2ManagedActionType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for M2ManagedActionType
impl PartialOrd for M2ManagedActionType
source§fn partial_cmp(&self, other: &M2ManagedActionType) -> Option<Ordering>
fn partial_cmp(&self, other: &M2ManagedActionType) -> 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 M2ManagedActionType
impl StructuralPartialEq for M2ManagedActionType
Auto Trait Implementations§
impl Freeze for M2ManagedActionType
impl RefUnwindSafe for M2ManagedActionType
impl Send for M2ManagedActionType
impl Sync for M2ManagedActionType
impl Unpin for M2ManagedActionType
impl UnwindSafe for M2ManagedActionType
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit)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