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