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