Struct viz_core::headers::Pragma

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pub struct Pragma(_);

Expand description

The Pragma header defined by HTTP/1.0.

The “Pragma” header field allows backwards compatibility with HTTP/1.0 caches, so that clients can specify a “no-cache” request that they will understand (as Cache-Control was not defined until HTTP/1.1). When the Cache-Control header field is also present and understood in a request, Pragma is ignored. In HTTP/1.0, Pragma was defined as an extensible field for implementation-specified directives for recipients. This specification deprecates such extensions to improve interoperability.

Spec: https://tools.ietf.org/html/rfc7234#section-5.4

Examples

use headers::Pragma;

let pragma = Pragma::no_cache();

Implementations

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impl Pragma

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pub fn no_cache() -> Pragma

Construct the literal no-cache Pragma header.

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pub fn is_no_cache(&self) -> bool

Return whether this pragma is no-cache.

Trait Implementations

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impl Clone for Pragma

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fn clone(&self) -> Pragma

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for Pragma

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

Formats the value using the given formatter. Read more

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impl Header for Pragma

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fn name() -> &'static HeaderName

The name of this header.

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

Decode this type from an iterator of HeaderValues.

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

Encode this type to a HeaderMap. Read more

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impl PartialEq<Pragma> for Pragma

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

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

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

This method tests for !=.

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impl StructuralPartialEq for Pragma

Auto Trait Implementations

impl RefUnwindSafe for Pragma

impl Send for Pragma

impl Sync for Pragma

impl Unpin for Pragma

impl UnwindSafe for Pragma

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;`

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;`

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

const: unstable · 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.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

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

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

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output;` where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output;`

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

Struct viz_core::headers::Pragma

Examples

Implementations

impl Pragma

pub fn no_cache() -> Pragma

pub fn is_no_cache(&self) -> bool

Trait Implementations

impl Clone for Pragma

fn clone(&self) -> Pragma

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

impl Debug for Pragma

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

impl Header for Pragma

fn name() -> &'static HeaderName

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

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

impl PartialEq<Pragma> for Pragma

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

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

impl StructuralPartialEq for Pragma

Auto Trait Implementations

impl RefUnwindSafe for Pragma

impl Send for Pragma

impl Sync for Pragma

impl Unpin for Pragma

impl UnwindSafe for Pragma

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

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

fn __clone_box(&self, Private) -> *mut ()

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;

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

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

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

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

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

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output; where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output;

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

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

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

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

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

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

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;`

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T> where T: Future, type Output = <T as Future>::Output;`

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

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

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

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

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

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output;` where
S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T> where T: Future, type Output = <T as Future>::Output;`