[][src]Enum rocket::http::hyper::header::IfNoneMatch

pub enum IfNoneMatch {

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.


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

Example values


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

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

let mut headers = Headers::new();
        EntityTag::new(false, "xyzzy".to_owned()),
        EntityTag::new(false, "foobar".to_owned()),
        EntityTag::new(false, "bazquux".to_owned()),


Any value is a match

Only the listed items are a match

Trait Implementations

impl From<IfNoneMatch> for Header<'static>

impl PartialEq<IfNoneMatch> for IfNoneMatch

impl Clone for IfNoneMatch

Performs copy-assignment from source. Read more

impl Display for IfNoneMatch

impl Debug for IfNoneMatch

impl HeaderFormat for IfNoneMatch

impl Header for IfNoneMatch

Auto Trait Implementations

impl Send for IfNoneMatch

impl Sync for IfNoneMatch

Blanket Implementations

impl<T> From for T

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

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

impl<T> ToOwned for T where
    T: Clone

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

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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

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

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

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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

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

impl<T> Typeable for T where
    T: Any

Get the TypeId of this object.

impl<T> IntoCollection for T

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