Enum aws_sdk_mediapackage::model::AdMarkers
source · #[non_exhaustive]
pub enum AdMarkers {
Daterange,
None,
Passthrough,
Scte35Enhanced,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AdMarkers
, 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 admarkers = unimplemented!();
match admarkers {
AdMarkers::Daterange => { /* ... */ },
AdMarkers::None => { /* ... */ },
AdMarkers::Passthrough => { /* ... */ },
AdMarkers::Scte35Enhanced => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when admarkers
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AdMarkers::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AdMarkers::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 AdMarkers::NewFeature
is defined.
Specifically, when admarkers
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AdMarkers::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.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Daterange
None
Passthrough
Scte35Enhanced
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl Ord for AdMarkers
impl Ord for AdMarkers
source§impl PartialEq<AdMarkers> for AdMarkers
impl PartialEq<AdMarkers> for AdMarkers
source§impl PartialOrd<AdMarkers> for AdMarkers
impl PartialOrd<AdMarkers> for AdMarkers
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 AdMarkers
impl StructuralEq for AdMarkers
impl StructuralPartialEq for AdMarkers
Auto Trait Implementations§
impl RefUnwindSafe for AdMarkers
impl Send for AdMarkers
impl Sync for AdMarkers
impl Unpin for AdMarkers
impl UnwindSafe for AdMarkers
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.