Enum aws_sdk_gamelift::types::OperatingSystem
source · #[non_exhaustive]pub enum OperatingSystem {
AmazonLinux,
AmazonLinux2,
AmazonLinux2023,
Windows2012,
Windows2016,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against OperatingSystem
, 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 operatingsystem = unimplemented!();
match operatingsystem {
OperatingSystem::AmazonLinux => { /* ... */ },
OperatingSystem::AmazonLinux2 => { /* ... */ },
OperatingSystem::AmazonLinux2023 => { /* ... */ },
OperatingSystem::Windows2012 => { /* ... */ },
OperatingSystem::Windows2016 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when operatingsystem
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant OperatingSystem::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
OperatingSystem::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 OperatingSystem::NewFeature
is defined.
Specifically, when operatingsystem
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on OperatingSystem::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
AmazonLinux
AmazonLinux2
AmazonLinux2023
Windows2012
Windows2016
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 OperatingSystem
impl OperatingSystem
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 OperatingSystem
impl AsRef<str> for OperatingSystem
source§impl Clone for OperatingSystem
impl Clone for OperatingSystem
source§fn clone(&self) -> OperatingSystem
fn clone(&self) -> OperatingSystem
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for OperatingSystem
impl Debug for OperatingSystem
source§impl Display for OperatingSystem
impl Display for OperatingSystem
source§impl From<&str> for OperatingSystem
impl From<&str> for OperatingSystem
source§impl FromStr for OperatingSystem
impl FromStr for OperatingSystem
source§impl Hash for OperatingSystem
impl Hash for OperatingSystem
source§impl Ord for OperatingSystem
impl Ord for OperatingSystem
source§fn cmp(&self, other: &OperatingSystem) -> Ordering
fn cmp(&self, other: &OperatingSystem) -> 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 OperatingSystem
impl PartialEq for OperatingSystem
source§fn eq(&self, other: &OperatingSystem) -> bool
fn eq(&self, other: &OperatingSystem) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for OperatingSystem
impl PartialOrd for OperatingSystem
source§fn partial_cmp(&self, other: &OperatingSystem) -> Option<Ordering>
fn partial_cmp(&self, other: &OperatingSystem) -> 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 OperatingSystem
impl StructuralPartialEq for OperatingSystem
Auto Trait Implementations§
impl Freeze for OperatingSystem
impl RefUnwindSafe for OperatingSystem
impl Send for OperatingSystem
impl Sync for OperatingSystem
impl Unpin for OperatingSystem
impl UnwindSafe for OperatingSystem
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