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