#[non_exhaustive]
pub enum AnalysisType {
CodeQuality,
Security,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AnalysisType
, 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 analysistype = unimplemented!();
match analysistype {
AnalysisType::CodeQuality => { /* ... */ },
AnalysisType::Security => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when analysistype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AnalysisType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AnalysisType::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 AnalysisType::NewFeature
is defined.
Specifically, when analysistype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AnalysisType::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
CodeQuality
Security
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for AnalysisType
impl AsRef<str> for AnalysisType
source§impl Clone for AnalysisType
impl Clone for AnalysisType
source§fn clone(&self) -> AnalysisType
fn clone(&self) -> AnalysisType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for AnalysisType
impl Debug for AnalysisType
source§impl From<&str> for AnalysisType
impl From<&str> for AnalysisType
source§impl FromStr for AnalysisType
impl FromStr for AnalysisType
source§impl Hash for AnalysisType
impl Hash for AnalysisType
source§impl Ord for AnalysisType
impl Ord for AnalysisType
source§fn cmp(&self, other: &AnalysisType) -> Ordering
fn cmp(&self, other: &AnalysisType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<AnalysisType> for AnalysisType
impl PartialEq<AnalysisType> for AnalysisType
source§fn eq(&self, other: &AnalysisType) -> bool
fn eq(&self, other: &AnalysisType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<AnalysisType> for AnalysisType
impl PartialOrd<AnalysisType> for AnalysisType
source§fn partial_cmp(&self, other: &AnalysisType) -> Option<Ordering>
fn partial_cmp(&self, other: &AnalysisType) -> 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 AnalysisType
impl StructuralEq for AnalysisType
impl StructuralPartialEq for AnalysisType
Auto Trait Implementations§
impl RefUnwindSafe for AnalysisType
impl Send for AnalysisType
impl Sync for AnalysisType
impl Unpin for AnalysisType
impl UnwindSafe for AnalysisType
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.