Enum aws_sdk_ses::types::EventType
source · #[non_exhaustive]pub enum EventType {
Bounce,
Click,
Complaint,
Delivery,
Open,
Reject,
RenderingFailure,
Send,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against EventType
, 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 eventtype = unimplemented!();
match eventtype {
EventType::Bounce => { /* ... */ },
EventType::Click => { /* ... */ },
EventType::Complaint => { /* ... */ },
EventType::Delivery => { /* ... */ },
EventType::Open => { /* ... */ },
EventType::Reject => { /* ... */ },
EventType::RenderingFailure => { /* ... */ },
EventType::Send => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when eventtype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant EventType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
EventType::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 EventType::NewFeature
is defined.
Specifically, when eventtype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on EventType::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
Bounce
Click
Complaint
Delivery
Open
Reject
RenderingFailure
Send
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§
Trait Implementations§
source§impl Ord for EventType
impl Ord for EventType
source§impl PartialEq for EventType
impl PartialEq for EventType
source§impl PartialOrd for EventType
impl PartialOrd for EventType
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 EventType
impl StructuralPartialEq for EventType
Auto Trait Implementations§
impl Freeze for EventType
impl RefUnwindSafe for EventType
impl Send for EventType
impl Sync for EventType
impl Unpin for EventType
impl UnwindSafe for EventType
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