#[non_exhaustive]pub enum HlsSegmentLengthControl {
Exact,
GopMultiple,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against HlsSegmentLengthControl
, 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 hlssegmentlengthcontrol = unimplemented!();
match hlssegmentlengthcontrol {
HlsSegmentLengthControl::Exact => { /* ... */ },
HlsSegmentLengthControl::GopMultiple => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when hlssegmentlengthcontrol
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant HlsSegmentLengthControl::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
HlsSegmentLengthControl::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 HlsSegmentLengthControl::NewFeature
is defined.
Specifically, when hlssegmentlengthcontrol
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on HlsSegmentLengthControl::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 how you want MediaConvert to determine the segment length. Choose Exact to have the encoder use the exact length that you specify with the setting Segment length. This might result in extra I-frames. Choose Multiple of GOP to have the encoder round up the segment lengths to match the next GOP boundary.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Exact
GopMultiple
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 HlsSegmentLengthControl
impl HlsSegmentLengthControl
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 HlsSegmentLengthControl
impl AsRef<str> for HlsSegmentLengthControl
source§impl Clone for HlsSegmentLengthControl
impl Clone for HlsSegmentLengthControl
source§fn clone(&self) -> HlsSegmentLengthControl
fn clone(&self) -> HlsSegmentLengthControl
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for HlsSegmentLengthControl
impl Debug for HlsSegmentLengthControl
source§impl Display for HlsSegmentLengthControl
impl Display for HlsSegmentLengthControl
source§impl From<&str> for HlsSegmentLengthControl
impl From<&str> for HlsSegmentLengthControl
source§impl FromStr for HlsSegmentLengthControl
impl FromStr for HlsSegmentLengthControl
source§impl Hash for HlsSegmentLengthControl
impl Hash for HlsSegmentLengthControl
source§impl Ord for HlsSegmentLengthControl
impl Ord for HlsSegmentLengthControl
source§fn cmp(&self, other: &HlsSegmentLengthControl) -> Ordering
fn cmp(&self, other: &HlsSegmentLengthControl) -> 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 HlsSegmentLengthControl
impl PartialEq for HlsSegmentLengthControl
source§fn eq(&self, other: &HlsSegmentLengthControl) -> bool
fn eq(&self, other: &HlsSegmentLengthControl) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for HlsSegmentLengthControl
impl PartialOrd for HlsSegmentLengthControl
source§fn partial_cmp(&self, other: &HlsSegmentLengthControl) -> Option<Ordering>
fn partial_cmp(&self, other: &HlsSegmentLengthControl) -> 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 HlsSegmentLengthControl
impl StructuralPartialEq for HlsSegmentLengthControl
Auto Trait Implementations§
impl Freeze for HlsSegmentLengthControl
impl RefUnwindSafe for HlsSegmentLengthControl
impl Send for HlsSegmentLengthControl
impl Sync for HlsSegmentLengthControl
impl Unpin for HlsSegmentLengthControl
impl UnwindSafe for HlsSegmentLengthControl
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