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