Enum aws_sdk_appmesh::types::HttpMethod
source · #[non_exhaustive]pub enum HttpMethod {
Connect,
Delete,
Get,
Head,
Options,
Patch,
Post,
Put,
Trace,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against HttpMethod
, 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 httpmethod = unimplemented!();
match httpmethod {
HttpMethod::Connect => { /* ... */ },
HttpMethod::Delete => { /* ... */ },
HttpMethod::Get => { /* ... */ },
HttpMethod::Head => { /* ... */ },
HttpMethod::Options => { /* ... */ },
HttpMethod::Patch => { /* ... */ },
HttpMethod::Post => { /* ... */ },
HttpMethod::Put => { /* ... */ },
HttpMethod::Trace => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when httpmethod
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant HttpMethod::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
HttpMethod::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 HttpMethod::NewFeature
is defined.
Specifically, when httpmethod
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on HttpMethod::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
Connect
Delete
Get
Head
Options
Patch
Post
Put
Trace
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 HttpMethod
impl HttpMethod
source§impl HttpMethod
impl HttpMethod
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 HttpMethod
impl AsRef<str> for HttpMethod
source§impl Clone for HttpMethod
impl Clone for HttpMethod
source§fn clone(&self) -> HttpMethod
fn clone(&self) -> HttpMethod
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for HttpMethod
impl Debug for HttpMethod
source§impl Display for HttpMethod
impl Display for HttpMethod
source§impl From<&str> for HttpMethod
impl From<&str> for HttpMethod
source§impl FromStr for HttpMethod
impl FromStr for HttpMethod
source§impl Hash for HttpMethod
impl Hash for HttpMethod
source§impl Ord for HttpMethod
impl Ord for HttpMethod
source§fn cmp(&self, other: &HttpMethod) -> Ordering
fn cmp(&self, other: &HttpMethod) -> 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 HttpMethod
impl PartialEq for HttpMethod
source§fn eq(&self, other: &HttpMethod) -> bool
fn eq(&self, other: &HttpMethod) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for HttpMethod
impl PartialOrd for HttpMethod
source§fn partial_cmp(&self, other: &HttpMethod) -> Option<Ordering>
fn partial_cmp(&self, other: &HttpMethod) -> 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 HttpMethod
impl StructuralPartialEq for HttpMethod
Auto Trait Implementations§
impl Freeze for HttpMethod
impl RefUnwindSafe for HttpMethod
impl Send for HttpMethod
impl Sync for HttpMethod
impl Unpin for HttpMethod
impl UnwindSafe for HttpMethod
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