#[non_exhaustive]pub enum HlsFragmentSelectorType {
ProducerTimestamp,
ServerTimestamp,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against HlsFragmentSelectorType
, 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 hlsfragmentselectortype = unimplemented!();
match hlsfragmentselectortype {
HlsFragmentSelectorType::ProducerTimestamp => { /* ... */ },
HlsFragmentSelectorType::ServerTimestamp => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when hlsfragmentselectortype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant HlsFragmentSelectorType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
HlsFragmentSelectorType::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 HlsFragmentSelectorType::NewFeature
is defined.
Specifically, when hlsfragmentselectortype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on HlsFragmentSelectorType::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
ProducerTimestamp
ServerTimestamp
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 HlsFragmentSelectorType
impl HlsFragmentSelectorType
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 HlsFragmentSelectorType
impl AsRef<str> for HlsFragmentSelectorType
source§impl Clone for HlsFragmentSelectorType
impl Clone for HlsFragmentSelectorType
source§fn clone(&self) -> HlsFragmentSelectorType
fn clone(&self) -> HlsFragmentSelectorType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for HlsFragmentSelectorType
impl Debug for HlsFragmentSelectorType
source§impl From<&str> for HlsFragmentSelectorType
impl From<&str> for HlsFragmentSelectorType
source§impl FromStr for HlsFragmentSelectorType
impl FromStr for HlsFragmentSelectorType
source§impl Hash for HlsFragmentSelectorType
impl Hash for HlsFragmentSelectorType
source§impl Ord for HlsFragmentSelectorType
impl Ord for HlsFragmentSelectorType
source§fn cmp(&self, other: &HlsFragmentSelectorType) -> Ordering
fn cmp(&self, other: &HlsFragmentSelectorType) -> 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 HlsFragmentSelectorType
impl PartialEq for HlsFragmentSelectorType
source§fn eq(&self, other: &HlsFragmentSelectorType) -> bool
fn eq(&self, other: &HlsFragmentSelectorType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for HlsFragmentSelectorType
impl PartialOrd for HlsFragmentSelectorType
source§fn partial_cmp(&self, other: &HlsFragmentSelectorType) -> Option<Ordering>
fn partial_cmp(&self, other: &HlsFragmentSelectorType) -> 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 HlsFragmentSelectorType
impl StructuralEq for HlsFragmentSelectorType
impl StructuralPartialEq for HlsFragmentSelectorType
Auto Trait Implementations§
impl RefUnwindSafe for HlsFragmentSelectorType
impl Send for HlsFragmentSelectorType
impl Sync for HlsFragmentSelectorType
impl Unpin for HlsFragmentSelectorType
impl UnwindSafe for HlsFragmentSelectorType
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
§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,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§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,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.