#[non_exhaustive]pub enum M2NonManagedRuntime {
Bluage,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against M2NonManagedRuntime, 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 m2nonmanagedruntime = unimplemented!();
match m2nonmanagedruntime {
M2NonManagedRuntime::Bluage => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when m2nonmanagedruntime represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant M2NonManagedRuntime::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
M2NonManagedRuntime::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 M2NonManagedRuntime::NewFeature is defined.
Specifically, when m2nonmanagedruntime represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on M2NonManagedRuntime::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
Bluage
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 M2NonManagedRuntime
impl M2NonManagedRuntime
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 M2NonManagedRuntime
impl AsRef<str> for M2NonManagedRuntime
source§impl Clone for M2NonManagedRuntime
impl Clone for M2NonManagedRuntime
source§fn clone(&self) -> M2NonManagedRuntime
fn clone(&self) -> M2NonManagedRuntime
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for M2NonManagedRuntime
impl Debug for M2NonManagedRuntime
source§impl Display for M2NonManagedRuntime
impl Display for M2NonManagedRuntime
source§impl From<&str> for M2NonManagedRuntime
impl From<&str> for M2NonManagedRuntime
source§impl FromStr for M2NonManagedRuntime
impl FromStr for M2NonManagedRuntime
source§impl Hash for M2NonManagedRuntime
impl Hash for M2NonManagedRuntime
source§impl Ord for M2NonManagedRuntime
impl Ord for M2NonManagedRuntime
source§fn cmp(&self, other: &M2NonManagedRuntime) -> Ordering
fn cmp(&self, other: &M2NonManagedRuntime) -> 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 M2NonManagedRuntime
impl PartialEq for M2NonManagedRuntime
source§fn eq(&self, other: &M2NonManagedRuntime) -> bool
fn eq(&self, other: &M2NonManagedRuntime) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for M2NonManagedRuntime
impl PartialOrd for M2NonManagedRuntime
source§fn partial_cmp(&self, other: &M2NonManagedRuntime) -> Option<Ordering>
fn partial_cmp(&self, other: &M2NonManagedRuntime) -> 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 M2NonManagedRuntime
impl StructuralPartialEq for M2NonManagedRuntime
Auto Trait Implementations§
impl Freeze for M2NonManagedRuntime
impl RefUnwindSafe for M2NonManagedRuntime
impl Send for M2NonManagedRuntime
impl Sync for M2NonManagedRuntime
impl Unpin for M2NonManagedRuntime
impl UnwindSafe for M2NonManagedRuntime
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