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