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