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