#[non_exhaustive]pub enum UpdateType {
Show 15 variants
AccessConfigUpdate,
AddonUpdate,
AssociateEncryptionConfig,
AssociateIdentityProviderConfig,
AutoModeUpdate,
ConfigUpdate,
DisassociateIdentityProviderConfig,
EndpointAccessUpdate,
LoggingUpdate,
RemoteNetworkConfigUpdate,
UpgradePolicyUpdate,
VersionUpdate,
VpcConfigUpdate,
ZonalShiftConfigUpdate,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against UpdateType
, 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 updatetype = unimplemented!();
match updatetype {
UpdateType::AccessConfigUpdate => { /* ... */ },
UpdateType::AddonUpdate => { /* ... */ },
UpdateType::AssociateEncryptionConfig => { /* ... */ },
UpdateType::AssociateIdentityProviderConfig => { /* ... */ },
UpdateType::AutoModeUpdate => { /* ... */ },
UpdateType::ConfigUpdate => { /* ... */ },
UpdateType::DisassociateIdentityProviderConfig => { /* ... */ },
UpdateType::EndpointAccessUpdate => { /* ... */ },
UpdateType::LoggingUpdate => { /* ... */ },
UpdateType::RemoteNetworkConfigUpdate => { /* ... */ },
UpdateType::UpgradePolicyUpdate => { /* ... */ },
UpdateType::VersionUpdate => { /* ... */ },
UpdateType::VpcConfigUpdate => { /* ... */ },
UpdateType::ZonalShiftConfigUpdate => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when updatetype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant UpdateType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
UpdateType::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 UpdateType::NewFeature
is defined.
Specifically, when updatetype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on UpdateType::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
AccessConfigUpdate
AddonUpdate
AssociateEncryptionConfig
AssociateIdentityProviderConfig
AutoModeUpdate
ConfigUpdate
DisassociateIdentityProviderConfig
EndpointAccessUpdate
LoggingUpdate
RemoteNetworkConfigUpdate
UpgradePolicyUpdate
VersionUpdate
VpcConfigUpdate
ZonalShiftConfigUpdate
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 UpdateType
impl UpdateType
Source§impl UpdateType
impl UpdateType
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 UpdateType
impl AsRef<str> for UpdateType
Source§impl Clone for UpdateType
impl Clone for UpdateType
Source§fn clone(&self) -> UpdateType
fn clone(&self) -> UpdateType
1.0.0 · Source§const fn clone_from(&mut self, source: &Self)
const fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for UpdateType
impl Debug for UpdateType
Source§impl Display for UpdateType
impl Display for UpdateType
Source§impl From<&str> for UpdateType
impl From<&str> for UpdateType
Source§impl FromStr for UpdateType
impl FromStr for UpdateType
Source§impl Hash for UpdateType
impl Hash for UpdateType
Source§impl Ord for UpdateType
impl Ord for UpdateType
Source§fn cmp(&self, other: &UpdateType) -> Ordering
fn cmp(&self, other: &UpdateType) -> 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 UpdateType
impl PartialEq for UpdateType
Source§impl PartialOrd for UpdateType
impl PartialOrd for UpdateType
impl Eq for UpdateType
impl StructuralPartialEq for UpdateType
Auto Trait Implementations§
impl Freeze for UpdateType
impl RefUnwindSafe for UpdateType
impl Send for UpdateType
impl Sync for UpdateType
impl Unpin for UpdateType
impl UnwindSafe for UpdateType
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