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