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