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