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