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