#[non_exhaustive]
pub enum ValidatePolicyResourceType {
RoleTrust,
S3AccessPoint,
S3Bucket,
S3MultiRegionAccessPoint,
S3ObjectLambdaAccessPoint,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against ValidatePolicyResourceType, 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 validatepolicyresourcetype = unimplemented!();
match validatepolicyresourcetype {
ValidatePolicyResourceType::RoleTrust => { /* ... */ },
ValidatePolicyResourceType::S3AccessPoint => { /* ... */ },
ValidatePolicyResourceType::S3Bucket => { /* ... */ },
ValidatePolicyResourceType::S3MultiRegionAccessPoint => { /* ... */ },
ValidatePolicyResourceType::S3ObjectLambdaAccessPoint => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when validatepolicyresourcetype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ValidatePolicyResourceType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
ValidatePolicyResourceType::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 ValidatePolicyResourceType::NewFeature is defined.
Specifically, when validatepolicyresourcetype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on ValidatePolicyResourceType::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
RoleTrust
S3AccessPoint
S3Bucket
S3MultiRegionAccessPoint
S3ObjectLambdaAccessPoint
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
source§impl ValidatePolicyResourceType
impl ValidatePolicyResourceType
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_validate_policy_input(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::input::ValidatePolicyInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_75) = &input.locale {
object.key("locale").string(var_75.as_str());
}
if let Some(var_76) = &input.policy_document {
object.key("policyDocument").string(var_76.as_str());
}
if let Some(var_77) = &input.policy_type {
object.key("policyType").string(var_77.as_str());
}
if let Some(var_78) = &input.validate_policy_resource_type {
object
.key("validatePolicyResourceType")
.string(var_78.as_str());
}
Ok(())
}Trait Implementations§
source§impl AsRef<str> for ValidatePolicyResourceType
impl AsRef<str> for ValidatePolicyResourceType
source§impl Clone for ValidatePolicyResourceType
impl Clone for ValidatePolicyResourceType
source§fn clone(&self) -> ValidatePolicyResourceType
fn clone(&self) -> ValidatePolicyResourceType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for ValidatePolicyResourceType
impl Debug for ValidatePolicyResourceType
source§impl From<&str> for ValidatePolicyResourceType
impl From<&str> for ValidatePolicyResourceType
source§impl FromStr for ValidatePolicyResourceType
impl FromStr for ValidatePolicyResourceType
source§impl Hash for ValidatePolicyResourceType
impl Hash for ValidatePolicyResourceType
source§impl Ord for ValidatePolicyResourceType
impl Ord for ValidatePolicyResourceType
source§fn cmp(&self, other: &ValidatePolicyResourceType) -> Ordering
fn cmp(&self, other: &ValidatePolicyResourceType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<ValidatePolicyResourceType> for ValidatePolicyResourceType
impl PartialEq<ValidatePolicyResourceType> for ValidatePolicyResourceType
source§fn eq(&self, other: &ValidatePolicyResourceType) -> bool
fn eq(&self, other: &ValidatePolicyResourceType) -> bool
source§impl PartialOrd<ValidatePolicyResourceType> for ValidatePolicyResourceType
impl PartialOrd<ValidatePolicyResourceType> for ValidatePolicyResourceType
source§fn partial_cmp(&self, other: &ValidatePolicyResourceType) -> Option<Ordering>
fn partial_cmp(&self, other: &ValidatePolicyResourceType) -> 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 ValidatePolicyResourceType
impl StructuralEq for ValidatePolicyResourceType
impl StructuralPartialEq for ValidatePolicyResourceType
Auto Trait Implementations§
impl RefUnwindSafe for ValidatePolicyResourceType
impl Send for ValidatePolicyResourceType
impl Sync for ValidatePolicyResourceType
impl Unpin for ValidatePolicyResourceType
impl UnwindSafe for ValidatePolicyResourceType
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.