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