Enum rocket::http::hyper::header::IfNoneMatch

source ·
pub enum IfNoneMatch {
    Any,
    Items(Vec<EntityTag>),
}
Expand description

If-None-Match header, defined in RFC7232

The If-None-Match header field makes the request method conditional on a recipient cache or origin server either not having any current representation of the target resource, when the field-value is “*”, or having a selected representation with an entity-tag that does not match any of those listed in the field-value.

A recipient MUST use the weak comparison function when comparing entity-tags for If-None-Match (Section 2.3.2), since weak entity-tags can be used for cache validation even if there have been changes to the representation data.

§ABNF

If-None-Match = "*" / 1#entity-tag

§Example values

  • "xyzzy"
  • W/"xyzzy"
  • "xyzzy", "r2d2xxxx", "c3piozzzz"
  • W/"xyzzy", W/"r2d2xxxx", W/"c3piozzzz"
  • *

§Examples

use hyper::header::{Headers, IfNoneMatch};

let mut headers = Headers::new();
headers.set(IfNoneMatch::Any);
use hyper::header::{Headers, IfNoneMatch, EntityTag};

let mut headers = Headers::new();
headers.set(
    IfNoneMatch::Items(vec![
        EntityTag::new(false, "xyzzy".to_owned()),
        EntityTag::new(false, "foobar".to_owned()),
        EntityTag::new(false, "bazquux".to_owned()),
    ])
);

Variants§

§

Any

Any value is a match

§

Items(Vec<EntityTag>)

Only the listed items are a match

Trait Implementations§

source§

impl Clone for IfNoneMatch

source§

fn clone(&self) -> IfNoneMatch

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl Debug for IfNoneMatch

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
source§

impl Display for IfNoneMatch

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
§

impl From<IfNoneMatch> for Header<'static>

§

fn from(header: IfNoneMatch) -> Header<'static>

Converts to this type from the input type.
source§

impl Header for IfNoneMatch

source§

fn header_name() -> &'static str

Returns the name of the header field this belongs to. Read more
source§

fn parse_header(raw: &[Vec<u8>]) -> Result<IfNoneMatch, Error>

Parse a header from a raw stream of bytes. Read more
source§

impl HeaderFormat for IfNoneMatch

source§

fn fmt_header(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Format a header to be output into a TcpStream. Read more
source§

impl PartialEq for IfNoneMatch

source§

fn eq(&self, other: &IfNoneMatch) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl StructuralPartialEq for IfNoneMatch

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T, I> AsResult<T, I> for T
where I: Input,

source§

fn as_result(self) -> Result<T, ParseErr<I>>

source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

§

impl<T> IntoCollection<T> for T

§

fn into_collection<A>(self) -> SmallVec<A>
where A: Array<Item = T>,

Converts self into a collection.
§

fn mapped<U, F, A>(self, f: F) -> SmallVec<A>
where F: FnMut(T) -> U, A: Array<Item = U>,

source§

impl<T> Same for T

source§

type Output = T

Should always be Self
source§

impl<T> ToOwned for T
where T: Clone,

source§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T> ToString for T
where T: Display + ?Sized,

source§

default fn to_string(&self) -> String

Converts the given value to a String. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

source§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> Typeable for T
where T: Any,

source§

fn get_type(&self) -> TypeId

Get the TypeId of this object.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V

source§

impl<T> HeaderClone for T
where T: Sealed,