Struct headers_ext::IfUnmodifiedSince

pub struct IfUnmodifiedSince(_);

If-Unmodified-Since header, defined in RFC7232

The If-Unmodified-Since header field makes the request method conditional on the selected representation’s last modification date being earlier than or equal to the date provided in the field-value. This field accomplishes the same purpose as If-Match for cases where the user agent does not have an entity-tag for the representation.

ABNF

If-Unmodified-Since = HTTP-date

Example values

• Sat, 29 Oct 1994 19:43:31 GMT

Example

use headers::IfUnmodifiedSince;
use std::time::{SystemTime, Duration};

let time = SystemTime::now() - Duration::from_secs(60 * 60 * 24);
let if_unmod = IfUnmodifiedSince::from(time);

Implementations

impl IfUnmodifiedSince

pub fn precondition_passes(&self, last_modified: SystemTime) -> bool

Check if the supplied time passes the precondtion.

Trait Implementations

impl Clone for IfUnmodifiedSince

fn clone(&self) -> IfUnmodifiedSince

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IfUnmodifiedSince

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

Formats the value using the given formatter.

impl From<IfUnmodifiedSince> for SystemTime

fn from(date: IfUnmodifiedSince) -> SystemTime

Converts to this type from the input type.

impl From<SystemTime> for IfUnmodifiedSince

fn from(time: SystemTime) -> IfUnmodifiedSince

Converts to this type from the input type.

impl Hash for IfUnmodifiedSince

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Header for IfUnmodifiedSince

const NAME: &'static HeaderName = _

The name of this header.

fn decode<'i, I>(values: &mut I) -> Result<Self, Error>where
    I: Iterator<Item = &'i HeaderValue>,

Decode this type from an iterator of HeaderValues.

fn encode<E: Extend<HeaderValue>>(&self, values: &mut E)

Encode this type to a HeaderMap.

impl Ord for IfUnmodifiedSince

fn cmp(&self, other: &IfUnmodifiedSince) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<IfUnmodifiedSince> for IfUnmodifiedSince

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<IfUnmodifiedSince> for IfUnmodifiedSince

fn partial_cmp(&self, other: &IfUnmodifiedSince) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for IfUnmodifiedSince

impl Eq for IfUnmodifiedSince

impl StructuralEq for IfUnmodifiedSince

impl StructuralPartialEq for IfUnmodifiedSince