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