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