#[non_exhaustive]pub enum XavcGopBReference {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against XavcGopBReference
, 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 xavcgopbreference = unimplemented!();
match xavcgopbreference {
XavcGopBReference::Disabled => { /* ... */ },
XavcGopBReference::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when xavcgopbreference
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant XavcGopBReference::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
XavcGopBReference::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 XavcGopBReference::NewFeature
is defined.
Specifically, when xavcgopbreference
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on XavcGopBReference::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. Specify whether the encoder uses B-frames as reference frames for other pictures in the same GOP. Choose Allow to allow the encoder to use B-frames as reference frames. Choose Don’t allow to prevent the encoder from using B-frames as reference frames.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
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 XavcGopBReference
impl XavcGopBReference
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 XavcGopBReference
impl AsRef<str> for XavcGopBReference
source§impl Clone for XavcGopBReference
impl Clone for XavcGopBReference
source§fn clone(&self) -> XavcGopBReference
fn clone(&self) -> XavcGopBReference
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for XavcGopBReference
impl Debug for XavcGopBReference
source§impl Display for XavcGopBReference
impl Display for XavcGopBReference
source§impl From<&str> for XavcGopBReference
impl From<&str> for XavcGopBReference
source§impl FromStr for XavcGopBReference
impl FromStr for XavcGopBReference
source§impl Hash for XavcGopBReference
impl Hash for XavcGopBReference
source§impl Ord for XavcGopBReference
impl Ord for XavcGopBReference
source§fn cmp(&self, other: &XavcGopBReference) -> Ordering
fn cmp(&self, other: &XavcGopBReference) -> 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 XavcGopBReference
impl PartialEq for XavcGopBReference
source§fn eq(&self, other: &XavcGopBReference) -> bool
fn eq(&self, other: &XavcGopBReference) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for XavcGopBReference
impl PartialOrd for XavcGopBReference
source§fn partial_cmp(&self, other: &XavcGopBReference) -> Option<Ordering>
fn partial_cmp(&self, other: &XavcGopBReference) -> 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 XavcGopBReference
impl StructuralPartialEq for XavcGopBReference
Auto Trait Implementations§
impl Freeze for XavcGopBReference
impl RefUnwindSafe for XavcGopBReference
impl Send for XavcGopBReference
impl Sync for XavcGopBReference
impl Unpin for XavcGopBReference
impl UnwindSafe for XavcGopBReference
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