Enum aws_sdk_codepipeline::types::PipelineType
source · #[non_exhaustive]pub enum PipelineType {
V1,
V2,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against PipelineType
, 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 pipelinetype = unimplemented!();
match pipelinetype {
PipelineType::V1 => { /* ... */ },
PipelineType::V2 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when pipelinetype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant PipelineType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
PipelineType::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 PipelineType::NewFeature
is defined.
Specifically, when pipelinetype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on PipelineType::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
V1
V2
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 PipelineType
impl PipelineType
source§impl PipelineType
impl PipelineType
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 PipelineType
impl AsRef<str> for PipelineType
source§impl Clone for PipelineType
impl Clone for PipelineType
source§fn clone(&self) -> PipelineType
fn clone(&self) -> PipelineType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for PipelineType
impl Debug for PipelineType
source§impl Display for PipelineType
impl Display for PipelineType
source§impl From<&str> for PipelineType
impl From<&str> for PipelineType
source§impl FromStr for PipelineType
impl FromStr for PipelineType
source§impl Hash for PipelineType
impl Hash for PipelineType
source§impl Ord for PipelineType
impl Ord for PipelineType
source§fn cmp(&self, other: &PipelineType) -> Ordering
fn cmp(&self, other: &PipelineType) -> 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 PipelineType
impl PartialEq for PipelineType
source§fn eq(&self, other: &PipelineType) -> bool
fn eq(&self, other: &PipelineType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for PipelineType
impl PartialOrd for PipelineType
source§fn partial_cmp(&self, other: &PipelineType) -> Option<Ordering>
fn partial_cmp(&self, other: &PipelineType) -> 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 PipelineType
impl StructuralPartialEq for PipelineType
Auto Trait Implementations§
impl Freeze for PipelineType
impl RefUnwindSafe for PipelineType
impl Send for PipelineType
impl Sync for PipelineType
impl Unpin for PipelineType
impl UnwindSafe for PipelineType
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