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