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