#[non_exhaustive]pub enum ArtifactLocationType {
S3,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against ArtifactLocationType, 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 artifactlocationtype = unimplemented!();
match artifactlocationtype {
ArtifactLocationType::S3 => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when artifactlocationtype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ArtifactLocationType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
ArtifactLocationType::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 ArtifactLocationType::NewFeature is defined.
Specifically, when artifactlocationtype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on ArtifactLocationType::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
S3
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ArtifactLocationType
impl AsRef<str> for ArtifactLocationType
source§impl Clone for ArtifactLocationType
impl Clone for ArtifactLocationType
source§fn clone(&self) -> ArtifactLocationType
fn clone(&self) -> ArtifactLocationType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for ArtifactLocationType
impl Debug for ArtifactLocationType
source§impl From<&str> for ArtifactLocationType
impl From<&str> for ArtifactLocationType
source§impl FromStr for ArtifactLocationType
impl FromStr for ArtifactLocationType
source§impl Hash for ArtifactLocationType
impl Hash for ArtifactLocationType
source§impl Ord for ArtifactLocationType
impl Ord for ArtifactLocationType
source§fn cmp(&self, other: &ArtifactLocationType) -> Ordering
fn cmp(&self, other: &ArtifactLocationType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<ArtifactLocationType> for ArtifactLocationType
impl PartialEq<ArtifactLocationType> for ArtifactLocationType
source§fn eq(&self, other: &ArtifactLocationType) -> bool
fn eq(&self, other: &ArtifactLocationType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd<ArtifactLocationType> for ArtifactLocationType
impl PartialOrd<ArtifactLocationType> for ArtifactLocationType
source§fn partial_cmp(&self, other: &ArtifactLocationType) -> Option<Ordering>
fn partial_cmp(&self, other: &ArtifactLocationType) -> 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 ArtifactLocationType
impl StructuralEq for ArtifactLocationType
impl StructuralPartialEq for ArtifactLocationType
Auto Trait Implementations§
impl RefUnwindSafe for ArtifactLocationType
impl Send for ArtifactLocationType
impl Sync for ArtifactLocationType
impl Unpin for ArtifactLocationType
impl UnwindSafe for ArtifactLocationType
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> 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.