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