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