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