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