#[non_exhaustive]pub enum CmafCodecSpecification {
Rfc4281,
Rfc6381,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against CmafCodecSpecification
, 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 cmafcodecspecification = unimplemented!();
match cmafcodecspecification {
CmafCodecSpecification::Rfc4281 => { /* ... */ },
CmafCodecSpecification::Rfc6381 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when cmafcodecspecification
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant CmafCodecSpecification::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
CmafCodecSpecification::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 CmafCodecSpecification::NewFeature
is defined.
Specifically, when cmafcodecspecification
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on CmafCodecSpecification::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. Specification to use (RFC-6381 or the default RFC-4281) during m3u8 playlist generation.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Rfc4281
Rfc6381
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 CmafCodecSpecification
impl CmafCodecSpecification
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 CmafCodecSpecification
impl AsRef<str> for CmafCodecSpecification
source§impl Clone for CmafCodecSpecification
impl Clone for CmafCodecSpecification
source§fn clone(&self) -> CmafCodecSpecification
fn clone(&self) -> CmafCodecSpecification
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for CmafCodecSpecification
impl Debug for CmafCodecSpecification
source§impl Display for CmafCodecSpecification
impl Display for CmafCodecSpecification
source§impl From<&str> for CmafCodecSpecification
impl From<&str> for CmafCodecSpecification
source§impl FromStr for CmafCodecSpecification
impl FromStr for CmafCodecSpecification
source§impl Hash for CmafCodecSpecification
impl Hash for CmafCodecSpecification
source§impl Ord for CmafCodecSpecification
impl Ord for CmafCodecSpecification
source§fn cmp(&self, other: &CmafCodecSpecification) -> Ordering
fn cmp(&self, other: &CmafCodecSpecification) -> 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 CmafCodecSpecification
impl PartialEq for CmafCodecSpecification
source§fn eq(&self, other: &CmafCodecSpecification) -> bool
fn eq(&self, other: &CmafCodecSpecification) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for CmafCodecSpecification
impl PartialOrd for CmafCodecSpecification
source§fn partial_cmp(&self, other: &CmafCodecSpecification) -> Option<Ordering>
fn partial_cmp(&self, other: &CmafCodecSpecification) -> 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 CmafCodecSpecification
impl StructuralPartialEq for CmafCodecSpecification
Auto Trait Implementations§
impl Freeze for CmafCodecSpecification
impl RefUnwindSafe for CmafCodecSpecification
impl Send for CmafCodecSpecification
impl Sync for CmafCodecSpecification
impl Unpin for CmafCodecSpecification
impl UnwindSafe for CmafCodecSpecification
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