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