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