Enum aws_sdk_snowball::types::RemoteManagement
source · #[non_exhaustive]pub enum RemoteManagement {
InstalledAutostart,
InstalledOnly,
NotInstalled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against RemoteManagement
, 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 remotemanagement = unimplemented!();
match remotemanagement {
RemoteManagement::InstalledAutostart => { /* ... */ },
RemoteManagement::InstalledOnly => { /* ... */ },
RemoteManagement::NotInstalled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when remotemanagement
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RemoteManagement::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
RemoteManagement::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 RemoteManagement::NewFeature
is defined.
Specifically, when remotemanagement
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on RemoteManagement::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
InstalledAutostart
InstalledOnly
NotInstalled
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 RemoteManagement
impl RemoteManagement
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 RemoteManagement
impl AsRef<str> for RemoteManagement
source§impl Clone for RemoteManagement
impl Clone for RemoteManagement
source§fn clone(&self) -> RemoteManagement
fn clone(&self) -> RemoteManagement
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RemoteManagement
impl Debug for RemoteManagement
source§impl Display for RemoteManagement
impl Display for RemoteManagement
source§impl From<&str> for RemoteManagement
impl From<&str> for RemoteManagement
source§impl FromStr for RemoteManagement
impl FromStr for RemoteManagement
source§impl Hash for RemoteManagement
impl Hash for RemoteManagement
source§impl Ord for RemoteManagement
impl Ord for RemoteManagement
source§fn cmp(&self, other: &RemoteManagement) -> Ordering
fn cmp(&self, other: &RemoteManagement) -> 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 RemoteManagement
impl PartialEq for RemoteManagement
source§fn eq(&self, other: &RemoteManagement) -> bool
fn eq(&self, other: &RemoteManagement) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for RemoteManagement
impl PartialOrd for RemoteManagement
source§fn partial_cmp(&self, other: &RemoteManagement) -> Option<Ordering>
fn partial_cmp(&self, other: &RemoteManagement) -> 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 RemoteManagement
impl StructuralPartialEq for RemoteManagement
Auto Trait Implementations§
impl Freeze for RemoteManagement
impl RefUnwindSafe for RemoteManagement
impl Send for RemoteManagement
impl Sync for RemoteManagement
impl Unpin for RemoteManagement
impl UnwindSafe for RemoteManagement
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> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.