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