Enum aws_sdk_wafv2::types::InspectionLevel
source · #[non_exhaustive]pub enum InspectionLevel {
Common,
Targeted,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against InspectionLevel
, 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 inspectionlevel = unimplemented!();
match inspectionlevel {
InspectionLevel::Common => { /* ... */ },
InspectionLevel::Targeted => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when inspectionlevel
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant InspectionLevel::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
InspectionLevel::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 InspectionLevel::NewFeature
is defined.
Specifically, when inspectionlevel
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on InspectionLevel::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
Common
Targeted
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 InspectionLevel
impl InspectionLevel
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 AsRef<str> for InspectionLevel
impl AsRef<str> for InspectionLevel
source§impl Clone for InspectionLevel
impl Clone for InspectionLevel
source§fn clone(&self) -> InspectionLevel
fn clone(&self) -> InspectionLevel
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for InspectionLevel
impl Debug for InspectionLevel
source§impl Display for InspectionLevel
impl Display for InspectionLevel
source§impl From<&str> for InspectionLevel
impl From<&str> for InspectionLevel
source§impl FromStr for InspectionLevel
impl FromStr for InspectionLevel
source§impl Hash for InspectionLevel
impl Hash for InspectionLevel
source§impl Ord for InspectionLevel
impl Ord for InspectionLevel
source§fn cmp(&self, other: &InspectionLevel) -> Ordering
fn cmp(&self, other: &InspectionLevel) -> 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 InspectionLevel
impl PartialEq for InspectionLevel
source§fn eq(&self, other: &InspectionLevel) -> bool
fn eq(&self, other: &InspectionLevel) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for InspectionLevel
impl PartialOrd for InspectionLevel
source§fn partial_cmp(&self, other: &InspectionLevel) -> Option<Ordering>
fn partial_cmp(&self, other: &InspectionLevel) -> 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 InspectionLevel
impl StructuralPartialEq for InspectionLevel
Auto Trait Implementations§
impl Freeze for InspectionLevel
impl RefUnwindSafe for InspectionLevel
impl Send for InspectionLevel
impl Sync for InspectionLevel
impl Unpin for InspectionLevel
impl UnwindSafe for InspectionLevel
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> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.