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