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