#[non_exhaustive]pub enum CpuArchitectureType {
Arm64,
X8664,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against CpuArchitectureType, 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 cpuarchitecturetype = unimplemented!();
match cpuarchitecturetype {
CpuArchitectureType::Arm64 => { /* ... */ },
CpuArchitectureType::X8664 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when cpuarchitecturetype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant CpuArchitectureType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
CpuArchitectureType::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 CpuArchitectureType::NewFeature is defined.
Specifically, when cpuarchitecturetype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on CpuArchitectureType::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
Arm64
X8664
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 CpuArchitectureType
impl CpuArchitectureType
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 CpuArchitectureType
impl AsRef<str> for CpuArchitectureType
source§impl Clone for CpuArchitectureType
impl Clone for CpuArchitectureType
source§fn clone(&self) -> CpuArchitectureType
fn clone(&self) -> CpuArchitectureType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for CpuArchitectureType
impl Debug for CpuArchitectureType
source§impl Display for CpuArchitectureType
impl Display for CpuArchitectureType
source§impl From<&str> for CpuArchitectureType
impl From<&str> for CpuArchitectureType
source§impl FromStr for CpuArchitectureType
impl FromStr for CpuArchitectureType
source§impl Hash for CpuArchitectureType
impl Hash for CpuArchitectureType
source§impl Ord for CpuArchitectureType
impl Ord for CpuArchitectureType
source§fn cmp(&self, other: &CpuArchitectureType) -> Ordering
fn cmp(&self, other: &CpuArchitectureType) -> 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 CpuArchitectureType
impl PartialEq for CpuArchitectureType
source§fn eq(&self, other: &CpuArchitectureType) -> bool
fn eq(&self, other: &CpuArchitectureType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for CpuArchitectureType
impl PartialOrd for CpuArchitectureType
source§fn partial_cmp(&self, other: &CpuArchitectureType) -> Option<Ordering>
fn partial_cmp(&self, other: &CpuArchitectureType) -> 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 CpuArchitectureType
impl StructuralPartialEq for CpuArchitectureType
Auto Trait Implementations§
impl Freeze for CpuArchitectureType
impl RefUnwindSafe for CpuArchitectureType
impl Send for CpuArchitectureType
impl Sync for CpuArchitectureType
impl Unpin for CpuArchitectureType
impl UnwindSafe for CpuArchitectureType
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