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