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