Enum aws_sdk_outposts::model::OrderStatus
source · #[non_exhaustive]
pub enum OrderStatus {
Cancelled,
Completed,
Error,
Fulfilled,
Installing,
InProgress,
Pending,
Preparing,
Processing,
Received,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against OrderStatus
, 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 orderstatus = unimplemented!();
match orderstatus {
OrderStatus::Cancelled => { /* ... */ },
OrderStatus::Completed => { /* ... */ },
OrderStatus::Error => { /* ... */ },
OrderStatus::Fulfilled => { /* ... */ },
OrderStatus::Installing => { /* ... */ },
OrderStatus::InProgress => { /* ... */ },
OrderStatus::Pending => { /* ... */ },
OrderStatus::Preparing => { /* ... */ },
OrderStatus::Processing => { /* ... */ },
OrderStatus::Received => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when orderstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant OrderStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
OrderStatus::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 OrderStatus::NewFeature
is defined.
Specifically, when orderstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on OrderStatus::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
Cancelled
Completed
Error
Fulfilled
Installing
InProgress
Pending
Preparing
Processing
Received
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for OrderStatus
impl AsRef<str> for OrderStatus
source§impl Clone for OrderStatus
impl Clone for OrderStatus
source§fn clone(&self) -> OrderStatus
fn clone(&self) -> OrderStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for OrderStatus
impl Debug for OrderStatus
source§impl From<&str> for OrderStatus
impl From<&str> for OrderStatus
source§impl FromStr for OrderStatus
impl FromStr for OrderStatus
source§impl Hash for OrderStatus
impl Hash for OrderStatus
source§impl Ord for OrderStatus
impl Ord for OrderStatus
source§fn cmp(&self, other: &OrderStatus) -> Ordering
fn cmp(&self, other: &OrderStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<OrderStatus> for OrderStatus
impl PartialEq<OrderStatus> for OrderStatus
source§fn eq(&self, other: &OrderStatus) -> bool
fn eq(&self, other: &OrderStatus) -> bool
source§impl PartialOrd<OrderStatus> for OrderStatus
impl PartialOrd<OrderStatus> for OrderStatus
source§fn partial_cmp(&self, other: &OrderStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &OrderStatus) -> 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 OrderStatus
impl StructuralEq for OrderStatus
impl StructuralPartialEq for OrderStatus
Auto Trait Implementations§
impl RefUnwindSafe for OrderStatus
impl Send for OrderStatus
impl Sync for OrderStatus
impl Unpin for OrderStatus
impl UnwindSafe for OrderStatus
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.