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