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