#[non_exhaustive]pub enum SingleYAxisOption {
PrimaryYAxis,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against SingleYAxisOption, 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 singleyaxisoption = unimplemented!();
match singleyaxisoption {
SingleYAxisOption::PrimaryYAxis => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when singleyaxisoption represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant SingleYAxisOption::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
SingleYAxisOption::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 SingleYAxisOption::NewFeature is defined.
Specifically, when singleyaxisoption represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on SingleYAxisOption::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis 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
PrimaryYAxis
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 SingleYAxisOption
impl SingleYAxisOption
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 SingleYAxisOption
impl AsRef<str> for SingleYAxisOption
source§impl Clone for SingleYAxisOption
impl Clone for SingleYAxisOption
source§fn clone(&self) -> SingleYAxisOption
fn clone(&self) -> SingleYAxisOption
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for SingleYAxisOption
impl Debug for SingleYAxisOption
source§impl From<&str> for SingleYAxisOption
impl From<&str> for SingleYAxisOption
source§impl FromStr for SingleYAxisOption
impl FromStr for SingleYAxisOption
source§impl Hash for SingleYAxisOption
impl Hash for SingleYAxisOption
source§impl Ord for SingleYAxisOption
impl Ord for SingleYAxisOption
source§fn cmp(&self, other: &SingleYAxisOption) -> Ordering
fn cmp(&self, other: &SingleYAxisOption) -> 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 SingleYAxisOption
impl PartialEq for SingleYAxisOption
source§fn eq(&self, other: &SingleYAxisOption) -> bool
fn eq(&self, other: &SingleYAxisOption) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for SingleYAxisOption
impl PartialOrd for SingleYAxisOption
source§fn partial_cmp(&self, other: &SingleYAxisOption) -> Option<Ordering>
fn partial_cmp(&self, other: &SingleYAxisOption) -> 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 SingleYAxisOption
impl StructuralEq for SingleYAxisOption
impl StructuralPartialEq for SingleYAxisOption
Auto Trait Implementations§
impl RefUnwindSafe for SingleYAxisOption
impl Send for SingleYAxisOption
impl Sync for SingleYAxisOption
impl Unpin for SingleYAxisOption
impl UnwindSafe for SingleYAxisOption
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
§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.