Enum aws_sdk_rum::model::CustomEventsStatus
source · #[non_exhaustive]
pub enum CustomEventsStatus {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against CustomEventsStatus
, 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 customeventsstatus = unimplemented!();
match customeventsstatus {
CustomEventsStatus::Disabled => { /* ... */ },
CustomEventsStatus::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when customeventsstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant CustomEventsStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
CustomEventsStatus::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 CustomEventsStatus::NewFeature
is defined.
Specifically, when customeventsstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on CustomEventsStatus::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.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for CustomEventsStatus
impl AsRef<str> for CustomEventsStatus
source§impl Clone for CustomEventsStatus
impl Clone for CustomEventsStatus
source§fn clone(&self) -> CustomEventsStatus
fn clone(&self) -> CustomEventsStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for CustomEventsStatus
impl Debug for CustomEventsStatus
source§impl From<&str> for CustomEventsStatus
impl From<&str> for CustomEventsStatus
source§impl FromStr for CustomEventsStatus
impl FromStr for CustomEventsStatus
source§impl Hash for CustomEventsStatus
impl Hash for CustomEventsStatus
source§impl Ord for CustomEventsStatus
impl Ord for CustomEventsStatus
source§fn cmp(&self, other: &CustomEventsStatus) -> Ordering
fn cmp(&self, other: &CustomEventsStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<CustomEventsStatus> for CustomEventsStatus
impl PartialEq<CustomEventsStatus> for CustomEventsStatus
source§fn eq(&self, other: &CustomEventsStatus) -> bool
fn eq(&self, other: &CustomEventsStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<CustomEventsStatus> for CustomEventsStatus
impl PartialOrd<CustomEventsStatus> for CustomEventsStatus
source§fn partial_cmp(&self, other: &CustomEventsStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &CustomEventsStatus) -> 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 CustomEventsStatus
impl StructuralEq for CustomEventsStatus
impl StructuralPartialEq for CustomEventsStatus
Auto Trait Implementations§
impl RefUnwindSafe for CustomEventsStatus
impl Send for CustomEventsStatus
impl Sync for CustomEventsStatus
impl Unpin for CustomEventsStatus
impl UnwindSafe for CustomEventsStatus
Blanket Implementations§
source§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,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.