#[non_exhaustive]pub enum ExperimentReportName {
BayesianInference,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against ExperimentReportName, 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 experimentreportname = unimplemented!();
match experimentreportname {
ExperimentReportName::BayesianInference => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when experimentreportname represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ExperimentReportName::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
ExperimentReportName::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 ExperimentReportName::NewFeature is defined.
Specifically, when experimentreportname represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on ExperimentReportName::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
BayesianInference
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ExperimentReportName
impl AsRef<str> for ExperimentReportName
source§impl Clone for ExperimentReportName
impl Clone for ExperimentReportName
source§fn clone(&self) -> ExperimentReportName
fn clone(&self) -> ExperimentReportName
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for ExperimentReportName
impl Debug for ExperimentReportName
source§impl From<&str> for ExperimentReportName
impl From<&str> for ExperimentReportName
source§impl FromStr for ExperimentReportName
impl FromStr for ExperimentReportName
source§impl Hash for ExperimentReportName
impl Hash for ExperimentReportName
source§impl Ord for ExperimentReportName
impl Ord for ExperimentReportName
source§fn cmp(&self, other: &ExperimentReportName) -> Ordering
fn cmp(&self, other: &ExperimentReportName) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<ExperimentReportName> for ExperimentReportName
impl PartialEq<ExperimentReportName> for ExperimentReportName
source§fn eq(&self, other: &ExperimentReportName) -> bool
fn eq(&self, other: &ExperimentReportName) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd<ExperimentReportName> for ExperimentReportName
impl PartialOrd<ExperimentReportName> for ExperimentReportName
source§fn partial_cmp(&self, other: &ExperimentReportName) -> Option<Ordering>
fn partial_cmp(&self, other: &ExperimentReportName) -> 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 ExperimentReportName
impl StructuralEq for ExperimentReportName
impl StructuralPartialEq for ExperimentReportName
Auto Trait Implementations§
impl RefUnwindSafe for ExperimentReportName
impl Send for ExperimentReportName
impl Sync for ExperimentReportName
impl Unpin for ExperimentReportName
impl UnwindSafe for ExperimentReportName
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> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.