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