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