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