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