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