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