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