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