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