Enum aws_sdk_mediaconvert::types::MovCslgAtom
source · #[non_exhaustive]pub enum MovCslgAtom {
Exclude,
Include,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against MovCslgAtom
, 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 movcslgatom = unimplemented!();
match movcslgatom {
MovCslgAtom::Exclude => { /* ... */ },
MovCslgAtom::Include => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when movcslgatom
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant MovCslgAtom::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
MovCslgAtom::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 MovCslgAtom::NewFeature
is defined.
Specifically, when movcslgatom
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on MovCslgAtom::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 enabled, file composition times will start at zero, composition times in the ‘ctts’ (composition time to sample) box for B-frames will be negative, and a ‘cslg’ (composition shift least greatest) box will be included per 14496-1 amendment 1. This improves compatibility with Apple players and tools.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Exclude
Include
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 MovCslgAtom
impl MovCslgAtom
source§impl MovCslgAtom
impl MovCslgAtom
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 MovCslgAtom
impl AsRef<str> for MovCslgAtom
source§impl Clone for MovCslgAtom
impl Clone for MovCslgAtom
source§fn clone(&self) -> MovCslgAtom
fn clone(&self) -> MovCslgAtom
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for MovCslgAtom
impl Debug for MovCslgAtom
source§impl Display for MovCslgAtom
impl Display for MovCslgAtom
source§impl From<&str> for MovCslgAtom
impl From<&str> for MovCslgAtom
source§impl FromStr for MovCslgAtom
impl FromStr for MovCslgAtom
source§impl Hash for MovCslgAtom
impl Hash for MovCslgAtom
source§impl Ord for MovCslgAtom
impl Ord for MovCslgAtom
source§fn cmp(&self, other: &MovCslgAtom) -> Ordering
fn cmp(&self, other: &MovCslgAtom) -> 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 MovCslgAtom
impl PartialEq for MovCslgAtom
source§fn eq(&self, other: &MovCslgAtom) -> bool
fn eq(&self, other: &MovCslgAtom) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for MovCslgAtom
impl PartialOrd for MovCslgAtom
source§fn partial_cmp(&self, other: &MovCslgAtom) -> Option<Ordering>
fn partial_cmp(&self, other: &MovCslgAtom) -> 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 MovCslgAtom
impl StructuralPartialEq for MovCslgAtom
Auto Trait Implementations§
impl Freeze for MovCslgAtom
impl RefUnwindSafe for MovCslgAtom
impl Send for MovCslgAtom
impl Sync for MovCslgAtom
impl Unpin for MovCslgAtom
impl UnwindSafe for MovCslgAtom
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