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