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