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