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