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.
ETag = entity-tag
use hyper::header::{Headers, ETag, EntityTag};
let mut headers = Headers::new();
headers.set(ETag(EntityTag::new(false, "xyzzy".to_owned())));
use hyper::header::{Headers, ETag, EntityTag};
let mut headers = Headers::new();
headers.set(ETag(EntityTag::new(true, "xyzzy".to_owned())));
Set the tag.
If the tag contains invalid characters.
For strong comparison two entity-tags are equivalent if both are not weak and their
opaque-tags match character-by-character.
For weak comparison two entity-tags are equivalent if their
opaque-tags match character-by-character, regardless of either or
both being tagged as "weak".
The inverse of EntityTag.strong_eq()
.
The inverse of EntityTag.weak_eq()
.
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Formats the value using the given formatter. Read more
Format a header to be output into a TcpStream. Read more
Returns the name of the header field this belongs to. Read more
Parse a header from a raw stream of bytes. Read more
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
Mutably dereferences the value.
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String
. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
impl<T> Typeable for T where T: Any, | |
Get the TypeId
of this object.