Enum aws_sdk_securityhub::model::Partition
source · #[non_exhaustive]
pub enum Partition {
Aws,
AwsCn,
AwsUsGov,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against Partition
, 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 partition = unimplemented!();
match partition {
Partition::Aws => { /* ... */ },
Partition::AwsCn => { /* ... */ },
Partition::AwsUsGov => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when partition
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant Partition::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
Partition::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 Partition::NewFeature
is defined.
Specifically, when partition
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on Partition::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
Aws
AwsCn
AwsUsGov
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl Ord for Partition
impl Ord for Partition
source§impl PartialEq<Partition> for Partition
impl PartialEq<Partition> for Partition
source§impl PartialOrd<Partition> for Partition
impl PartialOrd<Partition> for Partition
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 Partition
impl StructuralEq for Partition
impl StructuralPartialEq for Partition
Auto Trait Implementations§
impl RefUnwindSafe for Partition
impl Send for Partition
impl Sync for Partition
impl Unpin for Partition
impl UnwindSafe for Partition
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.