#[non_exhaustive]pub enum M2tsNielsenId3 {
Insert,
None,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against M2tsNielsenId3
, 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 m2tsnielsenid3 = unimplemented!();
match m2tsnielsenid3 {
M2tsNielsenId3::Insert => { /* ... */ },
M2tsNielsenId3::None => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when m2tsnielsenid3
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant M2tsNielsenId3::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
M2tsNielsenId3::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 M2tsNielsenId3::NewFeature
is defined.
Specifically, when m2tsnielsenid3
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on M2tsNielsenId3::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. If INSERT, Nielsen inaudible tones for media tracking will be detected in the input audio and an equivalent ID3 tag will be inserted in the output.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Insert
None
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 M2tsNielsenId3
impl M2tsNielsenId3
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 M2tsNielsenId3
impl AsRef<str> for M2tsNielsenId3
source§impl Clone for M2tsNielsenId3
impl Clone for M2tsNielsenId3
source§fn clone(&self) -> M2tsNielsenId3
fn clone(&self) -> M2tsNielsenId3
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for M2tsNielsenId3
impl Debug for M2tsNielsenId3
source§impl Display for M2tsNielsenId3
impl Display for M2tsNielsenId3
source§impl From<&str> for M2tsNielsenId3
impl From<&str> for M2tsNielsenId3
source§impl FromStr for M2tsNielsenId3
impl FromStr for M2tsNielsenId3
source§impl Hash for M2tsNielsenId3
impl Hash for M2tsNielsenId3
source§impl Ord for M2tsNielsenId3
impl Ord for M2tsNielsenId3
source§fn cmp(&self, other: &M2tsNielsenId3) -> Ordering
fn cmp(&self, other: &M2tsNielsenId3) -> 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 M2tsNielsenId3
impl PartialEq for M2tsNielsenId3
source§fn eq(&self, other: &M2tsNielsenId3) -> bool
fn eq(&self, other: &M2tsNielsenId3) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for M2tsNielsenId3
impl PartialOrd for M2tsNielsenId3
source§fn partial_cmp(&self, other: &M2tsNielsenId3) -> Option<Ordering>
fn partial_cmp(&self, other: &M2tsNielsenId3) -> 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 M2tsNielsenId3
impl StructuralPartialEq for M2tsNielsenId3
Auto Trait Implementations§
impl Freeze for M2tsNielsenId3
impl RefUnwindSafe for M2tsNielsenId3
impl Send for M2tsNielsenId3
impl Sync for M2tsNielsenId3
impl Unpin for M2tsNielsenId3
impl UnwindSafe for M2tsNielsenId3
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