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