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