#[non_exhaustive]pub enum Eac3AtmosCodingMode {
CodingMode514,
CodingMode714,
CodingMode916,
CodingModeAuto,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against Eac3AtmosCodingMode
, 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 eac3atmoscodingmode = unimplemented!();
match eac3atmoscodingmode {
Eac3AtmosCodingMode::CodingMode514 => { /* ... */ },
Eac3AtmosCodingMode::CodingMode714 => { /* ... */ },
Eac3AtmosCodingMode::CodingMode916 => { /* ... */ },
Eac3AtmosCodingMode::CodingModeAuto => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when eac3atmoscodingmode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant Eac3AtmosCodingMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
Eac3AtmosCodingMode::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 Eac3AtmosCodingMode::NewFeature
is defined.
Specifically, when eac3atmoscodingmode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on Eac3AtmosCodingMode::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. The coding mode for Dolby Digital Plus JOC (Atmos).
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
CodingMode514
CodingMode714
CodingMode916
CodingModeAuto
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 Eac3AtmosCodingMode
impl Eac3AtmosCodingMode
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 Eac3AtmosCodingMode
impl AsRef<str> for Eac3AtmosCodingMode
source§impl Clone for Eac3AtmosCodingMode
impl Clone for Eac3AtmosCodingMode
source§fn clone(&self) -> Eac3AtmosCodingMode
fn clone(&self) -> Eac3AtmosCodingMode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for Eac3AtmosCodingMode
impl Debug for Eac3AtmosCodingMode
source§impl Display for Eac3AtmosCodingMode
impl Display for Eac3AtmosCodingMode
source§impl From<&str> for Eac3AtmosCodingMode
impl From<&str> for Eac3AtmosCodingMode
source§impl FromStr for Eac3AtmosCodingMode
impl FromStr for Eac3AtmosCodingMode
source§impl Hash for Eac3AtmosCodingMode
impl Hash for Eac3AtmosCodingMode
source§impl Ord for Eac3AtmosCodingMode
impl Ord for Eac3AtmosCodingMode
source§fn cmp(&self, other: &Eac3AtmosCodingMode) -> Ordering
fn cmp(&self, other: &Eac3AtmosCodingMode) -> 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 Eac3AtmosCodingMode
impl PartialEq for Eac3AtmosCodingMode
source§fn eq(&self, other: &Eac3AtmosCodingMode) -> bool
fn eq(&self, other: &Eac3AtmosCodingMode) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for Eac3AtmosCodingMode
impl PartialOrd for Eac3AtmosCodingMode
source§fn partial_cmp(&self, other: &Eac3AtmosCodingMode) -> Option<Ordering>
fn partial_cmp(&self, other: &Eac3AtmosCodingMode) -> 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 Eac3AtmosCodingMode
impl StructuralPartialEq for Eac3AtmosCodingMode
Auto Trait Implementations§
impl Freeze for Eac3AtmosCodingMode
impl RefUnwindSafe for Eac3AtmosCodingMode
impl Send for Eac3AtmosCodingMode
impl Sync for Eac3AtmosCodingMode
impl Unpin for Eac3AtmosCodingMode
impl UnwindSafe for Eac3AtmosCodingMode
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