#[non_exhaustive]pub enum BotReplicaStatus {
Deleting,
Enabled,
Enabling,
Failed,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against BotReplicaStatus
, 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 botreplicastatus = unimplemented!();
match botreplicastatus {
BotReplicaStatus::Deleting => { /* ... */ },
BotReplicaStatus::Enabled => { /* ... */ },
BotReplicaStatus::Enabling => { /* ... */ },
BotReplicaStatus::Failed => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when botreplicastatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BotReplicaStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
BotReplicaStatus::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 BotReplicaStatus::NewFeature
is defined.
Specifically, when botreplicastatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on BotReplicaStatus::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is 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. Values: Enabling, Enabled, Deleting, Failed.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Deleting
Enabled
Enabling
Failed
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 BotReplicaStatus
impl BotReplicaStatus
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 BotReplicaStatus
impl AsRef<str> for BotReplicaStatus
source§impl Clone for BotReplicaStatus
impl Clone for BotReplicaStatus
source§fn clone(&self) -> BotReplicaStatus
fn clone(&self) -> BotReplicaStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for BotReplicaStatus
impl Debug for BotReplicaStatus
source§impl Display for BotReplicaStatus
impl Display for BotReplicaStatus
source§impl From<&str> for BotReplicaStatus
impl From<&str> for BotReplicaStatus
source§impl FromStr for BotReplicaStatus
impl FromStr for BotReplicaStatus
source§impl Hash for BotReplicaStatus
impl Hash for BotReplicaStatus
source§impl Ord for BotReplicaStatus
impl Ord for BotReplicaStatus
source§fn cmp(&self, other: &BotReplicaStatus) -> Ordering
fn cmp(&self, other: &BotReplicaStatus) -> 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 BotReplicaStatus
impl PartialEq for BotReplicaStatus
source§fn eq(&self, other: &BotReplicaStatus) -> bool
fn eq(&self, other: &BotReplicaStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for BotReplicaStatus
impl PartialOrd for BotReplicaStatus
source§fn partial_cmp(&self, other: &BotReplicaStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &BotReplicaStatus) -> 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 BotReplicaStatus
impl StructuralPartialEq for BotReplicaStatus
Auto Trait Implementations§
impl Freeze for BotReplicaStatus
impl RefUnwindSafe for BotReplicaStatus
impl Send for BotReplicaStatus
impl Sync for BotReplicaStatus
impl Unpin for BotReplicaStatus
impl UnwindSafe for BotReplicaStatus
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.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more