#[non_exhaustive]pub enum MovPaddingControl {
None,
Omneon,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against MovPaddingControl
, 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 movpaddingcontrol = unimplemented!();
match movpaddingcontrol {
MovPaddingControl::None => { /* ... */ },
MovPaddingControl::Omneon => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when movpaddingcontrol
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant MovPaddingControl::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
MovPaddingControl::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 MovPaddingControl::NewFeature
is defined.
Specifically, when movpaddingcontrol
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on MovPaddingControl::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. Unless you need Omneon compatibility: Keep the default value, None. To make this output compatible with Omneon: Choose Omneon. When you do, MediaConvert increases the length of the ‘elst’ edit list atom. Note that this might cause file rejections when a recipient of the output file doesn’t expect this extra padding.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
None
Omneon
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 MovPaddingControl
impl MovPaddingControl
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 MovPaddingControl
impl AsRef<str> for MovPaddingControl
source§impl Clone for MovPaddingControl
impl Clone for MovPaddingControl
source§fn clone(&self) -> MovPaddingControl
fn clone(&self) -> MovPaddingControl
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for MovPaddingControl
impl Debug for MovPaddingControl
source§impl Display for MovPaddingControl
impl Display for MovPaddingControl
source§impl From<&str> for MovPaddingControl
impl From<&str> for MovPaddingControl
source§impl FromStr for MovPaddingControl
impl FromStr for MovPaddingControl
source§impl Hash for MovPaddingControl
impl Hash for MovPaddingControl
source§impl Ord for MovPaddingControl
impl Ord for MovPaddingControl
source§fn cmp(&self, other: &MovPaddingControl) -> Ordering
fn cmp(&self, other: &MovPaddingControl) -> 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 MovPaddingControl
impl PartialEq for MovPaddingControl
source§fn eq(&self, other: &MovPaddingControl) -> bool
fn eq(&self, other: &MovPaddingControl) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for MovPaddingControl
impl PartialOrd for MovPaddingControl
source§fn partial_cmp(&self, other: &MovPaddingControl) -> Option<Ordering>
fn partial_cmp(&self, other: &MovPaddingControl) -> 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 MovPaddingControl
impl StructuralPartialEq for MovPaddingControl
Auto Trait Implementations§
impl Freeze for MovPaddingControl
impl RefUnwindSafe for MovPaddingControl
impl Send for MovPaddingControl
impl Sync for MovPaddingControl
impl Unpin for MovPaddingControl
impl UnwindSafe for MovPaddingControl
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