#[non_exhaustive]pub enum BedrockTraceStatus {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against BedrockTraceStatus, 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 bedrocktracestatus = unimplemented!();
match bedrocktracestatus {
BedrockTraceStatus::Disabled => { /* ... */ },
BedrockTraceStatus::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when bedrocktracestatus represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BedrockTraceStatus::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
BedrockTraceStatus::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 BedrockTraceStatus::NewFeature is defined.
Specifically, when bedrocktracestatus represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on BedrockTraceStatus::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis 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
Disabled
Enabled
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 BedrockTraceStatus
impl BedrockTraceStatus
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 BedrockTraceStatus
impl AsRef<str> for BedrockTraceStatus
source§impl Clone for BedrockTraceStatus
impl Clone for BedrockTraceStatus
source§fn clone(&self) -> BedrockTraceStatus
fn clone(&self) -> BedrockTraceStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for BedrockTraceStatus
impl Debug for BedrockTraceStatus
source§impl Display for BedrockTraceStatus
impl Display for BedrockTraceStatus
source§impl From<&str> for BedrockTraceStatus
impl From<&str> for BedrockTraceStatus
source§impl FromStr for BedrockTraceStatus
impl FromStr for BedrockTraceStatus
source§impl Hash for BedrockTraceStatus
impl Hash for BedrockTraceStatus
source§impl Ord for BedrockTraceStatus
impl Ord for BedrockTraceStatus
source§fn cmp(&self, other: &BedrockTraceStatus) -> Ordering
fn cmp(&self, other: &BedrockTraceStatus) -> 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 BedrockTraceStatus
impl PartialEq for BedrockTraceStatus
source§impl PartialOrd for BedrockTraceStatus
impl PartialOrd for BedrockTraceStatus
impl Eq for BedrockTraceStatus
impl StructuralPartialEq for BedrockTraceStatus
Auto Trait Implementations§
impl Freeze for BedrockTraceStatus
impl RefUnwindSafe for BedrockTraceStatus
impl Send for BedrockTraceStatus
impl Sync for BedrockTraceStatus
impl Unpin for BedrockTraceStatus
impl UnwindSafe for BedrockTraceStatus
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit)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