Enum aws_sdk_fsx::types::OpenZfsDeploymentType
source · #[non_exhaustive]pub enum OpenZfsDeploymentType {
MultiAz1,
SingleAz1,
SingleAz2,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against OpenZfsDeploymentType
, 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 openzfsdeploymenttype = unimplemented!();
match openzfsdeploymenttype {
OpenZfsDeploymentType::MultiAz1 => { /* ... */ },
OpenZfsDeploymentType::SingleAz1 => { /* ... */ },
OpenZfsDeploymentType::SingleAz2 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when openzfsdeploymenttype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant OpenZfsDeploymentType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
OpenZfsDeploymentType::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 OpenZfsDeploymentType::NewFeature
is defined.
Specifically, when openzfsdeploymenttype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on OpenZfsDeploymentType::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
MultiAz1
SingleAz1
SingleAz2
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 OpenZfsDeploymentType
impl OpenZfsDeploymentType
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 OpenZfsDeploymentType
impl AsRef<str> for OpenZfsDeploymentType
source§impl Clone for OpenZfsDeploymentType
impl Clone for OpenZfsDeploymentType
source§fn clone(&self) -> OpenZfsDeploymentType
fn clone(&self) -> OpenZfsDeploymentType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for OpenZfsDeploymentType
impl Debug for OpenZfsDeploymentType
source§impl Display for OpenZfsDeploymentType
impl Display for OpenZfsDeploymentType
source§impl From<&str> for OpenZfsDeploymentType
impl From<&str> for OpenZfsDeploymentType
source§impl FromStr for OpenZfsDeploymentType
impl FromStr for OpenZfsDeploymentType
source§impl Hash for OpenZfsDeploymentType
impl Hash for OpenZfsDeploymentType
source§impl Ord for OpenZfsDeploymentType
impl Ord for OpenZfsDeploymentType
source§fn cmp(&self, other: &OpenZfsDeploymentType) -> Ordering
fn cmp(&self, other: &OpenZfsDeploymentType) -> 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 OpenZfsDeploymentType
impl PartialEq for OpenZfsDeploymentType
source§fn eq(&self, other: &OpenZfsDeploymentType) -> bool
fn eq(&self, other: &OpenZfsDeploymentType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for OpenZfsDeploymentType
impl PartialOrd for OpenZfsDeploymentType
source§fn partial_cmp(&self, other: &OpenZfsDeploymentType) -> Option<Ordering>
fn partial_cmp(&self, other: &OpenZfsDeploymentType) -> 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 OpenZfsDeploymentType
impl StructuralPartialEq for OpenZfsDeploymentType
Auto Trait Implementations§
impl Freeze for OpenZfsDeploymentType
impl RefUnwindSafe for OpenZfsDeploymentType
impl Send for OpenZfsDeploymentType
impl Sync for OpenZfsDeploymentType
impl Unpin for OpenZfsDeploymentType
impl UnwindSafe for OpenZfsDeploymentType
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