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