Enum aws_sdk_apigateway::types::ApiKeysFormat
source · #[non_exhaustive]pub enum ApiKeysFormat {
Csv,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against ApiKeysFormat, 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 apikeysformat = unimplemented!();
match apikeysformat {
ApiKeysFormat::Csv => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when apikeysformat represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ApiKeysFormat::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
ApiKeysFormat::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 ApiKeysFormat::NewFeature is defined.
Specifically, when apikeysformat represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on ApiKeysFormat::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis 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
Csv
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 ApiKeysFormat
impl ApiKeysFormat
source§impl ApiKeysFormat
impl ApiKeysFormat
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 ApiKeysFormat
impl AsRef<str> for ApiKeysFormat
source§impl Clone for ApiKeysFormat
impl Clone for ApiKeysFormat
source§fn clone(&self) -> ApiKeysFormat
fn clone(&self) -> ApiKeysFormat
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for ApiKeysFormat
impl Debug for ApiKeysFormat
source§impl Display for ApiKeysFormat
impl Display for ApiKeysFormat
source§impl From<&str> for ApiKeysFormat
impl From<&str> for ApiKeysFormat
source§impl FromStr for ApiKeysFormat
impl FromStr for ApiKeysFormat
source§impl Hash for ApiKeysFormat
impl Hash for ApiKeysFormat
source§impl Ord for ApiKeysFormat
impl Ord for ApiKeysFormat
source§fn cmp(&self, other: &ApiKeysFormat) -> Ordering
fn cmp(&self, other: &ApiKeysFormat) -> 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 ApiKeysFormat
impl PartialEq for ApiKeysFormat
source§impl PartialOrd for ApiKeysFormat
impl PartialOrd for ApiKeysFormat
impl Eq for ApiKeysFormat
impl StructuralPartialEq for ApiKeysFormat
Auto Trait Implementations§
impl Freeze for ApiKeysFormat
impl RefUnwindSafe for ApiKeysFormat
impl Send for ApiKeysFormat
impl Sync for ApiKeysFormat
impl Unpin for ApiKeysFormat
impl UnwindSafe for ApiKeysFormat
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§unsafe fn clone_to_uninit(&self, dst: *mut T)
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