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