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