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