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