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