#[non_exhaustive]pub enum RepositoryAccessMode {
Platform,
Vpc,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against RepositoryAccessMode
, 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 repositoryaccessmode = unimplemented!();
match repositoryaccessmode {
RepositoryAccessMode::Platform => { /* ... */ },
RepositoryAccessMode::Vpc => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when repositoryaccessmode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RepositoryAccessMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
RepositoryAccessMode::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 RepositoryAccessMode::NewFeature
is defined.
Specifically, when repositoryaccessmode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on RepositoryAccessMode::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
Platform
Vpc
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 RepositoryAccessMode
impl RepositoryAccessMode
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 RepositoryAccessMode
impl AsRef<str> for RepositoryAccessMode
source§impl Clone for RepositoryAccessMode
impl Clone for RepositoryAccessMode
source§fn clone(&self) -> RepositoryAccessMode
fn clone(&self) -> RepositoryAccessMode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RepositoryAccessMode
impl Debug for RepositoryAccessMode
source§impl Display for RepositoryAccessMode
impl Display for RepositoryAccessMode
source§impl From<&str> for RepositoryAccessMode
impl From<&str> for RepositoryAccessMode
source§impl FromStr for RepositoryAccessMode
impl FromStr for RepositoryAccessMode
source§impl Hash for RepositoryAccessMode
impl Hash for RepositoryAccessMode
source§impl Ord for RepositoryAccessMode
impl Ord for RepositoryAccessMode
source§fn cmp(&self, other: &RepositoryAccessMode) -> Ordering
fn cmp(&self, other: &RepositoryAccessMode) -> 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 RepositoryAccessMode
impl PartialEq for RepositoryAccessMode
source§fn eq(&self, other: &RepositoryAccessMode) -> bool
fn eq(&self, other: &RepositoryAccessMode) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for RepositoryAccessMode
impl PartialOrd for RepositoryAccessMode
source§fn partial_cmp(&self, other: &RepositoryAccessMode) -> Option<Ordering>
fn partial_cmp(&self, other: &RepositoryAccessMode) -> 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 RepositoryAccessMode
impl StructuralPartialEq for RepositoryAccessMode
Auto Trait Implementations§
impl Freeze for RepositoryAccessMode
impl RefUnwindSafe for RepositoryAccessMode
impl Send for RepositoryAccessMode
impl Sync for RepositoryAccessMode
impl Unpin for RepositoryAccessMode
impl UnwindSafe for RepositoryAccessMode
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more