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