#[non_exhaustive]pub enum OAuth2CustomPropType {
AuthUrl,
TokenUrl,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against OAuth2CustomPropType
, 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 oauth2customproptype = unimplemented!();
match oauth2customproptype {
OAuth2CustomPropType::AuthUrl => { /* ... */ },
OAuth2CustomPropType::TokenUrl => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when oauth2customproptype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant OAuth2CustomPropType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
OAuth2CustomPropType::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 OAuth2CustomPropType::NewFeature
is defined.
Specifically, when oauth2customproptype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on OAuth2CustomPropType::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
AuthUrl
TokenUrl
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 OAuth2CustomPropType
impl OAuth2CustomPropType
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 OAuth2CustomPropType
impl AsRef<str> for OAuth2CustomPropType
source§impl Clone for OAuth2CustomPropType
impl Clone for OAuth2CustomPropType
source§fn clone(&self) -> OAuth2CustomPropType
fn clone(&self) -> OAuth2CustomPropType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for OAuth2CustomPropType
impl Debug for OAuth2CustomPropType
source§impl From<&str> for OAuth2CustomPropType
impl From<&str> for OAuth2CustomPropType
source§impl FromStr for OAuth2CustomPropType
impl FromStr for OAuth2CustomPropType
source§impl Hash for OAuth2CustomPropType
impl Hash for OAuth2CustomPropType
source§impl Ord for OAuth2CustomPropType
impl Ord for OAuth2CustomPropType
source§fn cmp(&self, other: &OAuth2CustomPropType) -> Ordering
fn cmp(&self, other: &OAuth2CustomPropType) -> 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 OAuth2CustomPropType
impl PartialEq for OAuth2CustomPropType
source§fn eq(&self, other: &OAuth2CustomPropType) -> bool
fn eq(&self, other: &OAuth2CustomPropType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for OAuth2CustomPropType
impl PartialOrd for OAuth2CustomPropType
source§fn partial_cmp(&self, other: &OAuth2CustomPropType) -> Option<Ordering>
fn partial_cmp(&self, other: &OAuth2CustomPropType) -> 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 OAuth2CustomPropType
impl StructuralEq for OAuth2CustomPropType
impl StructuralPartialEq for OAuth2CustomPropType
Auto Trait Implementations§
impl RefUnwindSafe for OAuth2CustomPropType
impl Send for OAuth2CustomPropType
impl Sync for OAuth2CustomPropType
impl Unpin for OAuth2CustomPropType
impl UnwindSafe for OAuth2CustomPropType
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.