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