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