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