#[non_exhaustive]pub enum SkipUnavailableStatus {
Disabled,
Enabled,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against SkipUnavailableStatus, 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 skipunavailablestatus = unimplemented!();
match skipunavailablestatus {
SkipUnavailableStatus::Disabled => { /* ... */ },
SkipUnavailableStatus::Enabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when skipunavailablestatus represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant SkipUnavailableStatus::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
SkipUnavailableStatus::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 SkipUnavailableStatus::NewFeature is defined.
Specifically, when skipunavailablestatus represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on SkipUnavailableStatus::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Status of SkipUnavailable param for outbound connection.
-
ENABLED - The SkipUnavailable param is enabled for the connection.
-
DISABLED - The SkipUnavailable param is disabled for the connection.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§fn clone(&self) -> SkipUnavailableStatus
fn clone(&self) -> SkipUnavailableStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§fn cmp(&self, other: &SkipUnavailableStatus) -> Ordering
fn cmp(&self, other: &SkipUnavailableStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§fn eq(&self, other: &SkipUnavailableStatus) -> bool
fn eq(&self, other: &SkipUnavailableStatus) -> bool
self and other values to be equal, and is used
by ==.source§fn partial_cmp(&self, other: &SkipUnavailableStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &SkipUnavailableStatus) -> 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 moreAuto Trait Implementations§
Blanket Implementations§
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.