#[non_exhaustive]
pub enum TestGridSessionArtifactCategory {
Log,
Video,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against TestGridSessionArtifactCategory, 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 testgridsessionartifactcategory = unimplemented!();
match testgridsessionartifactcategory {
TestGridSessionArtifactCategory::Log => { /* ... */ },
TestGridSessionArtifactCategory::Video => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when testgridsessionartifactcategory represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TestGridSessionArtifactCategory::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
TestGridSessionArtifactCategory::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 TestGridSessionArtifactCategory::NewFeature is defined.
Specifically, when testgridsessionartifactcategory represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on TestGridSessionArtifactCategory::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
Log
Video
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
source§impl TestGridSessionArtifactCategory
impl TestGridSessionArtifactCategory
sourcepub fn as_str(&self) -> &str
pub fn as_str(&self) -> &str
Returns the &str value of the enum member.
Examples found in repository?
More examples
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pub fn serialize_structure_crate_input_list_test_grid_session_artifacts_input(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::input::ListTestGridSessionArtifactsInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_133) = &input.session_arn {
object.key("sessionArn").string(var_133.as_str());
}
if let Some(var_134) = &input.r#type {
object.key("type").string(var_134.as_str());
}
if let Some(var_135) = &input.max_result {
object.key("maxResult").number(
#[allow(clippy::useless_conversion)]
aws_smithy_types::Number::NegInt((*var_135).into()),
);
}
if let Some(var_136) = &input.next_token {
object.key("nextToken").string(var_136.as_str());
}
Ok(())
}Trait Implementations§
source§impl AsRef<str> for TestGridSessionArtifactCategory
impl AsRef<str> for TestGridSessionArtifactCategory
source§impl Clone for TestGridSessionArtifactCategory
impl Clone for TestGridSessionArtifactCategory
source§fn clone(&self) -> TestGridSessionArtifactCategory
fn clone(&self) -> TestGridSessionArtifactCategory
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl From<&str> for TestGridSessionArtifactCategory
impl From<&str> for TestGridSessionArtifactCategory
source§impl Ord for TestGridSessionArtifactCategory
impl Ord for TestGridSessionArtifactCategory
source§fn cmp(&self, other: &TestGridSessionArtifactCategory) -> Ordering
fn cmp(&self, other: &TestGridSessionArtifactCategory) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<TestGridSessionArtifactCategory> for TestGridSessionArtifactCategory
impl PartialEq<TestGridSessionArtifactCategory> for TestGridSessionArtifactCategory
source§fn eq(&self, other: &TestGridSessionArtifactCategory) -> bool
fn eq(&self, other: &TestGridSessionArtifactCategory) -> bool
source§impl PartialOrd<TestGridSessionArtifactCategory> for TestGridSessionArtifactCategory
impl PartialOrd<TestGridSessionArtifactCategory> for TestGridSessionArtifactCategory
source§fn partial_cmp(
&self,
other: &TestGridSessionArtifactCategory
) -> Option<Ordering>
fn partial_cmp(
&self,
other: &TestGridSessionArtifactCategory
) -> 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 TestGridSessionArtifactCategory
impl StructuralEq for TestGridSessionArtifactCategory
impl StructuralPartialEq for TestGridSessionArtifactCategory
Auto Trait Implementations§
impl RefUnwindSafe for TestGridSessionArtifactCategory
impl Send for TestGridSessionArtifactCategory
impl Sync for TestGridSessionArtifactCategory
impl Unpin for TestGridSessionArtifactCategory
impl UnwindSafe for TestGridSessionArtifactCategory
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.