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