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