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