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