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