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