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