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