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