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