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