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