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