#[non_exhaustive]pub enum SyncConfigurationType {
CfnStackSync,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against SyncConfigurationType, 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 syncconfigurationtype = unimplemented!();
match syncconfigurationtype {
SyncConfigurationType::CfnStackSync => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when syncconfigurationtype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant SyncConfigurationType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
SyncConfigurationType::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 SyncConfigurationType::NewFeature is defined.
Specifically, when syncconfigurationtype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on SyncConfigurationType::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
CfnStackSync
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 SyncConfigurationType
impl SyncConfigurationType
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 SyncConfigurationType
impl AsRef<str> for SyncConfigurationType
source§impl Clone for SyncConfigurationType
impl Clone for SyncConfigurationType
source§fn clone(&self) -> SyncConfigurationType
fn clone(&self) -> SyncConfigurationType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for SyncConfigurationType
impl Debug for SyncConfigurationType
source§impl Display for SyncConfigurationType
impl Display for SyncConfigurationType
source§impl From<&str> for SyncConfigurationType
impl From<&str> for SyncConfigurationType
source§impl FromStr for SyncConfigurationType
impl FromStr for SyncConfigurationType
source§impl Hash for SyncConfigurationType
impl Hash for SyncConfigurationType
source§impl Ord for SyncConfigurationType
impl Ord for SyncConfigurationType
source§fn cmp(&self, other: &SyncConfigurationType) -> Ordering
fn cmp(&self, other: &SyncConfigurationType) -> 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 SyncConfigurationType
impl PartialEq for SyncConfigurationType
source§fn eq(&self, other: &SyncConfigurationType) -> bool
fn eq(&self, other: &SyncConfigurationType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for SyncConfigurationType
impl PartialOrd for SyncConfigurationType
source§fn partial_cmp(&self, other: &SyncConfigurationType) -> Option<Ordering>
fn partial_cmp(&self, other: &SyncConfigurationType) -> 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 SyncConfigurationType
impl StructuralPartialEq for SyncConfigurationType
Auto Trait Implementations§
impl Freeze for SyncConfigurationType
impl RefUnwindSafe for SyncConfigurationType
impl Send for SyncConfigurationType
impl Sync for SyncConfigurationType
impl Unpin for SyncConfigurationType
impl UnwindSafe for SyncConfigurationType
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit)source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more