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