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