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