#[non_exhaustive]pub enum RemediationTargetType {
SsmDocument,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against RemediationTargetType, 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 remediationtargettype = unimplemented!();
match remediationtargettype {
RemediationTargetType::SsmDocument => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when remediationtargettype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RemediationTargetType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
RemediationTargetType::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 RemediationTargetType::NewFeature is defined.
Specifically, when remediationtargettype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on RemediationTargetType::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis 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
SsmDocument
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 RemediationTargetType
impl RemediationTargetType
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 RemediationTargetType
impl AsRef<str> for RemediationTargetType
source§impl Clone for RemediationTargetType
impl Clone for RemediationTargetType
source§fn clone(&self) -> RemediationTargetType
fn clone(&self) -> RemediationTargetType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for RemediationTargetType
impl Debug for RemediationTargetType
source§impl Display for RemediationTargetType
impl Display for RemediationTargetType
source§impl From<&str> for RemediationTargetType
impl From<&str> for RemediationTargetType
source§impl FromStr for RemediationTargetType
impl FromStr for RemediationTargetType
source§impl Hash for RemediationTargetType
impl Hash for RemediationTargetType
source§impl Ord for RemediationTargetType
impl Ord for RemediationTargetType
source§fn cmp(&self, other: &RemediationTargetType) -> Ordering
fn cmp(&self, other: &RemediationTargetType) -> 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 RemediationTargetType
impl PartialEq for RemediationTargetType
source§fn eq(&self, other: &RemediationTargetType) -> bool
fn eq(&self, other: &RemediationTargetType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for RemediationTargetType
impl PartialOrd for RemediationTargetType
source§fn partial_cmp(&self, other: &RemediationTargetType) -> Option<Ordering>
fn partial_cmp(&self, other: &RemediationTargetType) -> 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 RemediationTargetType
impl StructuralPartialEq for RemediationTargetType
Auto Trait Implementations§
impl Freeze for RemediationTargetType
impl RefUnwindSafe for RemediationTargetType
impl Send for RemediationTargetType
impl Sync for RemediationTargetType
impl Unpin for RemediationTargetType
impl UnwindSafe for RemediationTargetType
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit)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.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more