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