#[non_exhaustive]pub enum MediaPipelineSinkType {
S3Bucket,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against MediaPipelineSinkType
, 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 mediapipelinesinktype = unimplemented!();
match mediapipelinesinktype {
MediaPipelineSinkType::S3Bucket => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when mediapipelinesinktype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant MediaPipelineSinkType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
MediaPipelineSinkType::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 MediaPipelineSinkType::NewFeature
is defined.
Specifically, when mediapipelinesinktype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on MediaPipelineSinkType::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
S3Bucket
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 MediaPipelineSinkType
impl MediaPipelineSinkType
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 MediaPipelineSinkType
impl AsRef<str> for MediaPipelineSinkType
source§impl Clone for MediaPipelineSinkType
impl Clone for MediaPipelineSinkType
source§fn clone(&self) -> MediaPipelineSinkType
fn clone(&self) -> MediaPipelineSinkType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for MediaPipelineSinkType
impl Debug for MediaPipelineSinkType
source§impl Display for MediaPipelineSinkType
impl Display for MediaPipelineSinkType
source§impl From<&str> for MediaPipelineSinkType
impl From<&str> for MediaPipelineSinkType
source§impl FromStr for MediaPipelineSinkType
impl FromStr for MediaPipelineSinkType
source§impl Hash for MediaPipelineSinkType
impl Hash for MediaPipelineSinkType
source§impl Ord for MediaPipelineSinkType
impl Ord for MediaPipelineSinkType
source§fn cmp(&self, other: &MediaPipelineSinkType) -> Ordering
fn cmp(&self, other: &MediaPipelineSinkType) -> 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 MediaPipelineSinkType
impl PartialEq for MediaPipelineSinkType
source§fn eq(&self, other: &MediaPipelineSinkType) -> bool
fn eq(&self, other: &MediaPipelineSinkType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for MediaPipelineSinkType
impl PartialOrd for MediaPipelineSinkType
source§fn partial_cmp(&self, other: &MediaPipelineSinkType) -> Option<Ordering>
fn partial_cmp(&self, other: &MediaPipelineSinkType) -> 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 MediaPipelineSinkType
impl StructuralPartialEq for MediaPipelineSinkType
Auto Trait Implementations§
impl Freeze for MediaPipelineSinkType
impl RefUnwindSafe for MediaPipelineSinkType
impl Send for MediaPipelineSinkType
impl Sync for MediaPipelineSinkType
impl Unpin for MediaPipelineSinkType
impl UnwindSafe for MediaPipelineSinkType
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