#[non_exhaustive]pub enum FindingSourceType {
BucketAcl,
Policy,
S3AccessPoint,
S3AccessPointAccount,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against FindingSourceType
, 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 findingsourcetype = unimplemented!();
match findingsourcetype {
FindingSourceType::BucketAcl => { /* ... */ },
FindingSourceType::Policy => { /* ... */ },
FindingSourceType::S3AccessPoint => { /* ... */ },
FindingSourceType::S3AccessPointAccount => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when findingsourcetype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant FindingSourceType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
FindingSourceType::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 FindingSourceType::NewFeature
is defined.
Specifically, when findingsourcetype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on FindingSourceType::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
BucketAcl
Policy
S3AccessPoint
S3AccessPointAccount
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 FindingSourceType
impl FindingSourceType
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 FindingSourceType
impl AsRef<str> for FindingSourceType
source§impl Clone for FindingSourceType
impl Clone for FindingSourceType
source§fn clone(&self) -> FindingSourceType
fn clone(&self) -> FindingSourceType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for FindingSourceType
impl Debug for FindingSourceType
source§impl Display for FindingSourceType
impl Display for FindingSourceType
source§impl From<&str> for FindingSourceType
impl From<&str> for FindingSourceType
source§impl FromStr for FindingSourceType
impl FromStr for FindingSourceType
source§impl Hash for FindingSourceType
impl Hash for FindingSourceType
source§impl Ord for FindingSourceType
impl Ord for FindingSourceType
source§fn cmp(&self, other: &FindingSourceType) -> Ordering
fn cmp(&self, other: &FindingSourceType) -> 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 FindingSourceType
impl PartialEq for FindingSourceType
source§fn eq(&self, other: &FindingSourceType) -> bool
fn eq(&self, other: &FindingSourceType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for FindingSourceType
impl PartialOrd for FindingSourceType
source§fn partial_cmp(&self, other: &FindingSourceType) -> Option<Ordering>
fn partial_cmp(&self, other: &FindingSourceType) -> 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 FindingSourceType
impl StructuralPartialEq for FindingSourceType
Auto Trait Implementations§
impl Freeze for FindingSourceType
impl RefUnwindSafe for FindingSourceType
impl Send for FindingSourceType
impl Sync for FindingSourceType
impl Unpin for FindingSourceType
impl UnwindSafe for FindingSourceType
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.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more