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