#[non_exhaustive]
pub enum VulnerabilityFixAvailable {
No,
Partial,
Yes,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against VulnerabilityFixAvailable
, 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 vulnerabilityfixavailable = unimplemented!();
match vulnerabilityfixavailable {
VulnerabilityFixAvailable::No => { /* ... */ },
VulnerabilityFixAvailable::Partial => { /* ... */ },
VulnerabilityFixAvailable::Yes => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when vulnerabilityfixavailable
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant VulnerabilityFixAvailable::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
VulnerabilityFixAvailable::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 VulnerabilityFixAvailable::NewFeature
is defined.
Specifically, when vulnerabilityfixavailable
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on VulnerabilityFixAvailable::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
No
Partial
Yes
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for VulnerabilityFixAvailable
impl AsRef<str> for VulnerabilityFixAvailable
source§impl Clone for VulnerabilityFixAvailable
impl Clone for VulnerabilityFixAvailable
source§fn clone(&self) -> VulnerabilityFixAvailable
fn clone(&self) -> VulnerabilityFixAvailable
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for VulnerabilityFixAvailable
impl Debug for VulnerabilityFixAvailable
source§impl From<&str> for VulnerabilityFixAvailable
impl From<&str> for VulnerabilityFixAvailable
source§impl FromStr for VulnerabilityFixAvailable
impl FromStr for VulnerabilityFixAvailable
source§impl Hash for VulnerabilityFixAvailable
impl Hash for VulnerabilityFixAvailable
source§impl Ord for VulnerabilityFixAvailable
impl Ord for VulnerabilityFixAvailable
source§fn cmp(&self, other: &VulnerabilityFixAvailable) -> Ordering
fn cmp(&self, other: &VulnerabilityFixAvailable) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<VulnerabilityFixAvailable> for VulnerabilityFixAvailable
impl PartialEq<VulnerabilityFixAvailable> for VulnerabilityFixAvailable
source§fn eq(&self, other: &VulnerabilityFixAvailable) -> bool
fn eq(&self, other: &VulnerabilityFixAvailable) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<VulnerabilityFixAvailable> for VulnerabilityFixAvailable
impl PartialOrd<VulnerabilityFixAvailable> for VulnerabilityFixAvailable
source§fn partial_cmp(&self, other: &VulnerabilityFixAvailable) -> Option<Ordering>
fn partial_cmp(&self, other: &VulnerabilityFixAvailable) -> 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 VulnerabilityFixAvailable
impl StructuralEq for VulnerabilityFixAvailable
impl StructuralPartialEq for VulnerabilityFixAvailable
Auto Trait Implementations§
impl RefUnwindSafe for VulnerabilityFixAvailable
impl Send for VulnerabilityFixAvailable
impl Sync for VulnerabilityFixAvailable
impl Unpin for VulnerabilityFixAvailable
impl UnwindSafe for VulnerabilityFixAvailable
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.