Enum aws_sdk_sagemaker::model::InputMode
source · #[non_exhaustive]
pub enum InputMode {
File,
Pipe,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against InputMode
, 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 inputmode = unimplemented!();
match inputmode {
InputMode::File => { /* ... */ },
InputMode::Pipe => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when inputmode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant InputMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
InputMode::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 InputMode::NewFeature
is defined.
Specifically, when inputmode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on InputMode::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
File
Pipe
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl Ord for InputMode
impl Ord for InputMode
source§impl PartialEq<InputMode> for InputMode
impl PartialEq<InputMode> for InputMode
source§impl PartialOrd<InputMode> for InputMode
impl PartialOrd<InputMode> for InputMode
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 InputMode
impl StructuralEq for InputMode
impl StructuralPartialEq for InputMode
Auto Trait Implementations§
impl RefUnwindSafe for InputMode
impl Send for InputMode
impl Sync for InputMode
impl Unpin for InputMode
impl UnwindSafe for InputMode
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.