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