Enum aws_sdk_ec2::types::ArchitectureType
source · #[non_exhaustive]pub enum ArchitectureType {
Arm64,
Arm64Mac,
I386,
X8664,
X8664Mac,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ArchitectureType
, 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 architecturetype = unimplemented!();
match architecturetype {
ArchitectureType::Arm64 => { /* ... */ },
ArchitectureType::Arm64Mac => { /* ... */ },
ArchitectureType::I386 => { /* ... */ },
ArchitectureType::X8664 => { /* ... */ },
ArchitectureType::X8664Mac => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when architecturetype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ArchitectureType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ArchitectureType::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 ArchitectureType::NewFeature
is defined.
Specifically, when architecturetype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ArchitectureType::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
Arm64
Arm64Mac
I386
X8664
X8664Mac
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ArchitectureType
impl AsRef<str> for ArchitectureType
source§impl Clone for ArchitectureType
impl Clone for ArchitectureType
source§fn clone(&self) -> ArchitectureType
fn clone(&self) -> ArchitectureType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ArchitectureType
impl Debug for ArchitectureType
source§impl From<&str> for ArchitectureType
impl From<&str> for ArchitectureType
source§impl FromStr for ArchitectureType
impl FromStr for ArchitectureType
source§impl Hash for ArchitectureType
impl Hash for ArchitectureType
source§impl Ord for ArchitectureType
impl Ord for ArchitectureType
source§fn cmp(&self, other: &ArchitectureType) -> Ordering
fn cmp(&self, other: &ArchitectureType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<ArchitectureType> for ArchitectureType
impl PartialEq<ArchitectureType> for ArchitectureType
source§fn eq(&self, other: &ArchitectureType) -> bool
fn eq(&self, other: &ArchitectureType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<ArchitectureType> for ArchitectureType
impl PartialOrd<ArchitectureType> for ArchitectureType
source§fn partial_cmp(&self, other: &ArchitectureType) -> Option<Ordering>
fn partial_cmp(&self, other: &ArchitectureType) -> 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 ArchitectureType
impl StructuralEq for ArchitectureType
impl StructuralPartialEq for ArchitectureType
Auto Trait Implementations§
impl RefUnwindSafe for ArchitectureType
impl Send for ArchitectureType
impl Sync for ArchitectureType
impl Unpin for ArchitectureType
impl UnwindSafe for ArchitectureType
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> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.