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