Enum aws_sdk_omics::types::ReadSetPartSource
source · #[non_exhaustive]pub enum ReadSetPartSource {
Source1,
Source2,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ReadSetPartSource
, 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 readsetpartsource = unimplemented!();
match readsetpartsource {
ReadSetPartSource::Source1 => { /* ... */ },
ReadSetPartSource::Source2 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when readsetpartsource
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ReadSetPartSource::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ReadSetPartSource::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 ReadSetPartSource::NewFeature
is defined.
Specifically, when readsetpartsource
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ReadSetPartSource::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
Source1
Source2
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ReadSetPartSource
impl AsRef<str> for ReadSetPartSource
source§impl Clone for ReadSetPartSource
impl Clone for ReadSetPartSource
source§fn clone(&self) -> ReadSetPartSource
fn clone(&self) -> ReadSetPartSource
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ReadSetPartSource
impl Debug for ReadSetPartSource
source§impl From<&str> for ReadSetPartSource
impl From<&str> for ReadSetPartSource
source§impl FromStr for ReadSetPartSource
impl FromStr for ReadSetPartSource
source§impl Hash for ReadSetPartSource
impl Hash for ReadSetPartSource
source§impl Ord for ReadSetPartSource
impl Ord for ReadSetPartSource
source§fn cmp(&self, other: &ReadSetPartSource) -> Ordering
fn cmp(&self, other: &ReadSetPartSource) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<ReadSetPartSource> for ReadSetPartSource
impl PartialEq<ReadSetPartSource> for ReadSetPartSource
source§fn eq(&self, other: &ReadSetPartSource) -> bool
fn eq(&self, other: &ReadSetPartSource) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<ReadSetPartSource> for ReadSetPartSource
impl PartialOrd<ReadSetPartSource> for ReadSetPartSource
source§fn partial_cmp(&self, other: &ReadSetPartSource) -> Option<Ordering>
fn partial_cmp(&self, other: &ReadSetPartSource) -> 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 ReadSetPartSource
impl StructuralEq for ReadSetPartSource
impl StructuralPartialEq for ReadSetPartSource
Auto Trait Implementations§
impl RefUnwindSafe for ReadSetPartSource
impl Send for ReadSetPartSource
impl Sync for ReadSetPartSource
impl Unpin for ReadSetPartSource
impl UnwindSafe for ReadSetPartSource
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.