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