#[non_exhaustive]pub enum InventoryConfigurationState {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against InventoryConfigurationState, 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 inventoryconfigurationstate = unimplemented!();
match inventoryconfigurationstate {
InventoryConfigurationState::Disabled => { /* ... */ },
InventoryConfigurationState::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}The above code demonstrates that when inventoryconfigurationstate represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant InventoryConfigurationState::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
InventoryConfigurationState::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 InventoryConfigurationState::NewFeature is defined.
Specifically, when inventoryconfigurationstate represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on InventoryConfigurationState::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
Disabled
Enabled
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 InventoryConfigurationState
impl InventoryConfigurationState
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 InventoryConfigurationState
impl AsRef<str> for InventoryConfigurationState
Source§impl Clone for InventoryConfigurationState
impl Clone for InventoryConfigurationState
Source§fn clone(&self) -> InventoryConfigurationState
fn clone(&self) -> InventoryConfigurationState
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for InventoryConfigurationState
impl Debug for InventoryConfigurationState
Source§impl From<&str> for InventoryConfigurationState
impl From<&str> for InventoryConfigurationState
Source§impl Hash for InventoryConfigurationState
impl Hash for InventoryConfigurationState
Source§impl Ord for InventoryConfigurationState
impl Ord for InventoryConfigurationState
Source§fn cmp(&self, other: &InventoryConfigurationState) -> Ordering
fn cmp(&self, other: &InventoryConfigurationState) -> Ordering
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl PartialOrd for InventoryConfigurationState
impl PartialOrd for InventoryConfigurationState
impl Eq for InventoryConfigurationState
impl StructuralPartialEq for InventoryConfigurationState
Auto Trait Implementations§
impl Freeze for InventoryConfigurationState
impl RefUnwindSafe for InventoryConfigurationState
impl Send for InventoryConfigurationState
impl Sync for InventoryConfigurationState
impl Unpin for InventoryConfigurationState
impl UnwindSafe for InventoryConfigurationState
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§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§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