Struct poem::web::headers::ETag [−][src]
pub struct ETag(_);
Expand description
ETag
header, defined in RFC7232
The ETag
header field in a response provides the current entity-tag
for the selected representation, as determined at the conclusion of
handling the request. An entity-tag is an opaque validator for
differentiating between multiple representations of the same
resource, regardless of whether those multiple representations are
due to resource state changes over time, content negotiation
resulting in multiple representations being valid at the same time,
or both. An entity-tag consists of an opaque quoted string, possibly
prefixed by a weakness indicator.
ABNF
ETag = entity-tag
Example values
"xyzzy"
W/"xyzzy"
""
Examples
let etag = "\"xyzzy\"".parse::<headers::ETag>().unwrap();
Trait Implementations
Performs the conversion.
The name of this header.
Decode this type from an iterator of HeaderValue
s.
Auto Trait Implementations
impl RefUnwindSafe for ETag
impl UnwindSafe for ETag
Blanket Implementations
Mutably borrows from an owned value. Read more
Compare self to key
and return true
if they are equal.
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more