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

pub enum IfNoneMatch {
    Any,
    Items(Vec<EntityTag>),
}

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

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

impl Clone for IfNoneMatch[src]

impl Debug for IfNoneMatch[src]

impl Display for IfNoneMatch[src]

impl From<IfNoneMatch> for Header<'static>

impl Header for IfNoneMatch[src]

impl HeaderFormat for IfNoneMatch[src]

impl PartialEq<IfNoneMatch> for IfNoneMatch[src]

impl StructuralPartialEq for IfNoneMatch[src]

Auto Trait Implementations

impl RefUnwindSafe for IfNoneMatch

impl Send for IfNoneMatch

impl Sync for IfNoneMatch

impl Unpin for IfNoneMatch

impl UnwindSafe for IfNoneMatch

Blanket Implementations

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

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

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T> HeaderClone for T where
    T: Sealed, 
[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> IntoCollection<T> for T

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

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

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T> Typeable for T where
    T: Any