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