#[non_exhaustive]pub enum TranscribeLanguageCode {
Show 15 variants
DeDe,
EnAu,
EnGb,
EnUs,
EsUs,
FrCa,
FrFr,
HiIn,
ItIt,
JaJp,
KoKr,
PtBr,
ThTh,
ZhCn,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against TranscribeLanguageCode, 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 transcribelanguagecode = unimplemented!();
match transcribelanguagecode {
TranscribeLanguageCode::DeDe => { /* ... */ },
TranscribeLanguageCode::EnAu => { /* ... */ },
TranscribeLanguageCode::EnGb => { /* ... */ },
TranscribeLanguageCode::EnUs => { /* ... */ },
TranscribeLanguageCode::EsUs => { /* ... */ },
TranscribeLanguageCode::FrCa => { /* ... */ },
TranscribeLanguageCode::FrFr => { /* ... */ },
TranscribeLanguageCode::HiIn => { /* ... */ },
TranscribeLanguageCode::ItIt => { /* ... */ },
TranscribeLanguageCode::JaJp => { /* ... */ },
TranscribeLanguageCode::KoKr => { /* ... */ },
TranscribeLanguageCode::PtBr => { /* ... */ },
TranscribeLanguageCode::ThTh => { /* ... */ },
TranscribeLanguageCode::ZhCn => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when transcribelanguagecode represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TranscribeLanguageCode::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
TranscribeLanguageCode::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 TranscribeLanguageCode::NewFeature is defined.
Specifically, when transcribelanguagecode represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on TranscribeLanguageCode::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
HiIn
ItIt
JaJp
KoKr
PtBr
ThTh
ZhCn
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for TranscribeLanguageCode
impl AsRef<str> for TranscribeLanguageCode
source§impl Clone for TranscribeLanguageCode
impl Clone for TranscribeLanguageCode
source§fn clone(&self) -> TranscribeLanguageCode
fn clone(&self) -> TranscribeLanguageCode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for TranscribeLanguageCode
impl Debug for TranscribeLanguageCode
source§impl From<&str> for TranscribeLanguageCode
impl From<&str> for TranscribeLanguageCode
source§impl FromStr for TranscribeLanguageCode
impl FromStr for TranscribeLanguageCode
source§impl Hash for TranscribeLanguageCode
impl Hash for TranscribeLanguageCode
source§impl Ord for TranscribeLanguageCode
impl Ord for TranscribeLanguageCode
source§fn cmp(&self, other: &TranscribeLanguageCode) -> Ordering
fn cmp(&self, other: &TranscribeLanguageCode) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<TranscribeLanguageCode> for TranscribeLanguageCode
impl PartialEq<TranscribeLanguageCode> for TranscribeLanguageCode
source§fn eq(&self, other: &TranscribeLanguageCode) -> bool
fn eq(&self, other: &TranscribeLanguageCode) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd<TranscribeLanguageCode> for TranscribeLanguageCode
impl PartialOrd<TranscribeLanguageCode> for TranscribeLanguageCode
source§fn partial_cmp(&self, other: &TranscribeLanguageCode) -> Option<Ordering>
fn partial_cmp(&self, other: &TranscribeLanguageCode) -> 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 TranscribeLanguageCode
impl StructuralEq for TranscribeLanguageCode
impl StructuralPartialEq for TranscribeLanguageCode
Auto Trait Implementations§
impl RefUnwindSafe for TranscribeLanguageCode
impl Send for TranscribeLanguageCode
impl Sync for TranscribeLanguageCode
impl Unpin for TranscribeLanguageCode
impl UnwindSafe for TranscribeLanguageCode
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.