#[non_exhaustive]pub enum EmbeddedTerminateCaptions {
Disabled,
EndOfInput,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against EmbeddedTerminateCaptions
, 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 embeddedterminatecaptions = unimplemented!();
match embeddedterminatecaptions {
EmbeddedTerminateCaptions::Disabled => { /* ... */ },
EmbeddedTerminateCaptions::EndOfInput => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when embeddedterminatecaptions
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant EmbeddedTerminateCaptions::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
EmbeddedTerminateCaptions::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 EmbeddedTerminateCaptions::NewFeature
is defined.
Specifically, when embeddedterminatecaptions
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on EmbeddedTerminateCaptions::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. By default, the service terminates any unterminated captions at the end of each input. If you want the caption to continue onto your next input, disable this setting.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
EndOfInput
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 EmbeddedTerminateCaptions
impl EmbeddedTerminateCaptions
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 EmbeddedTerminateCaptions
impl AsRef<str> for EmbeddedTerminateCaptions
source§impl Clone for EmbeddedTerminateCaptions
impl Clone for EmbeddedTerminateCaptions
source§fn clone(&self) -> EmbeddedTerminateCaptions
fn clone(&self) -> EmbeddedTerminateCaptions
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for EmbeddedTerminateCaptions
impl Debug for EmbeddedTerminateCaptions
source§impl Display for EmbeddedTerminateCaptions
impl Display for EmbeddedTerminateCaptions
source§impl From<&str> for EmbeddedTerminateCaptions
impl From<&str> for EmbeddedTerminateCaptions
source§impl FromStr for EmbeddedTerminateCaptions
impl FromStr for EmbeddedTerminateCaptions
source§impl Hash for EmbeddedTerminateCaptions
impl Hash for EmbeddedTerminateCaptions
source§impl Ord for EmbeddedTerminateCaptions
impl Ord for EmbeddedTerminateCaptions
source§fn cmp(&self, other: &EmbeddedTerminateCaptions) -> Ordering
fn cmp(&self, other: &EmbeddedTerminateCaptions) -> 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 EmbeddedTerminateCaptions
impl PartialEq for EmbeddedTerminateCaptions
source§fn eq(&self, other: &EmbeddedTerminateCaptions) -> bool
fn eq(&self, other: &EmbeddedTerminateCaptions) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for EmbeddedTerminateCaptions
impl PartialOrd for EmbeddedTerminateCaptions
source§fn partial_cmp(&self, other: &EmbeddedTerminateCaptions) -> Option<Ordering>
fn partial_cmp(&self, other: &EmbeddedTerminateCaptions) -> 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 EmbeddedTerminateCaptions
impl StructuralPartialEq for EmbeddedTerminateCaptions
Auto Trait Implementations§
impl Freeze for EmbeddedTerminateCaptions
impl RefUnwindSafe for EmbeddedTerminateCaptions
impl Send for EmbeddedTerminateCaptions
impl Sync for EmbeddedTerminateCaptions
impl Unpin for EmbeddedTerminateCaptions
impl UnwindSafe for EmbeddedTerminateCaptions
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.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more