Enum aws_sdk_s3control::types::NetworkOrigin
source · #[non_exhaustive]pub enum NetworkOrigin {
Internet,
Vpc,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against NetworkOrigin
, 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 networkorigin = unimplemented!();
match networkorigin {
NetworkOrigin::Internet => { /* ... */ },
NetworkOrigin::Vpc => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when networkorigin
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant NetworkOrigin::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
NetworkOrigin::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 NetworkOrigin::NewFeature
is defined.
Specifically, when networkorigin
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on NetworkOrigin::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
Internet
Vpc
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl NetworkOrigin
impl NetworkOrigin
source§impl NetworkOrigin
impl NetworkOrigin
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for NetworkOrigin
impl AsRef<str> for NetworkOrigin
source§impl Clone for NetworkOrigin
impl Clone for NetworkOrigin
source§fn clone(&self) -> NetworkOrigin
fn clone(&self) -> NetworkOrigin
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for NetworkOrigin
impl Debug for NetworkOrigin
source§impl Display for NetworkOrigin
impl Display for NetworkOrigin
source§impl From<&str> for NetworkOrigin
impl From<&str> for NetworkOrigin
source§impl FromStr for NetworkOrigin
impl FromStr for NetworkOrigin
source§impl Hash for NetworkOrigin
impl Hash for NetworkOrigin
source§impl Ord for NetworkOrigin
impl Ord for NetworkOrigin
source§fn cmp(&self, other: &NetworkOrigin) -> Ordering
fn cmp(&self, other: &NetworkOrigin) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for NetworkOrigin
impl PartialEq for NetworkOrigin
source§fn eq(&self, other: &NetworkOrigin) -> bool
fn eq(&self, other: &NetworkOrigin) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for NetworkOrigin
impl PartialOrd for NetworkOrigin
source§fn partial_cmp(&self, other: &NetworkOrigin) -> Option<Ordering>
fn partial_cmp(&self, other: &NetworkOrigin) -> 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 NetworkOrigin
impl StructuralPartialEq for NetworkOrigin
Auto Trait Implementations§
impl Freeze for NetworkOrigin
impl RefUnwindSafe for NetworkOrigin
impl Send for NetworkOrigin
impl Sync for NetworkOrigin
impl Unpin for NetworkOrigin
impl UnwindSafe for NetworkOrigin
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> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more