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