Struct salvo::http::headers::IfNoneMatch [−][src]
pub struct IfNoneMatch(_);
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 headers::IfNoneMatch; let if_none_match = IfNoneMatch::any();
Implementations
impl IfNoneMatch
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impl IfNoneMatch
[src]pub fn any() -> IfNoneMatch
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pub fn any() -> IfNoneMatch
[src]Create a new If-None-Match: *
header.
pub fn precondition_passes(&self, etag: &ETag) -> bool
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pub fn precondition_passes(&self, etag: &ETag) -> bool
[src]Checks whether the ETag passes this precondition.
Trait Implementations
impl Clone for IfNoneMatch
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impl Clone for IfNoneMatch
[src]pub fn clone(&self) -> IfNoneMatch
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pub fn clone(&self) -> IfNoneMatch
[src]Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]Performs copy-assignment from source
. Read more
impl Debug for IfNoneMatch
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impl Debug for IfNoneMatch
[src]impl From<ETag> for IfNoneMatch
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impl From<ETag> for IfNoneMatch
[src]pub fn from(etag: ETag) -> IfNoneMatch
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pub fn from(etag: ETag) -> IfNoneMatch
[src]Performs the conversion.
impl Header for IfNoneMatch
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impl Header for IfNoneMatch
[src]pub fn name() -> &'static HeaderName
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pub fn name() -> &'static HeaderName
[src]The name of this header.
pub fn decode<'i, I>(values: &mut I) -> Result<IfNoneMatch, Error> where
I: Iterator<Item = &'i HeaderValue>,
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pub fn decode<'i, I>(values: &mut I) -> Result<IfNoneMatch, Error> where
I: Iterator<Item = &'i HeaderValue>,
[src]Decode this type from an iterator of HeaderValue
s.
impl PartialEq<IfNoneMatch> for IfNoneMatch
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impl PartialEq<IfNoneMatch> for IfNoneMatch
[src]pub fn eq(&self, other: &IfNoneMatch) -> bool
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pub fn eq(&self, other: &IfNoneMatch) -> bool
[src]This method tests for self
and other
values to be equal, and is used
by ==
. Read more
pub fn ne(&self, other: &IfNoneMatch) -> bool
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pub fn ne(&self, other: &IfNoneMatch) -> bool
[src]This method tests for !=
.
impl StructuralPartialEq for IfNoneMatch
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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> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> Instrument for T
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impl<T> Instrument for T
[src]fn instrument(self, span: Span) -> Instrumented<Self>
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fn instrument(self, span: Span) -> Instrumented<Self>
[src]Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
fn in_current_span(self) -> Instrumented<Self>
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fn in_current_span(self) -> Instrumented<Self>
[src]impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
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pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,