pub struct Pragma(/* private fields */);
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§
Trait Implementations§
source§impl Header for Pragma
impl Header for Pragma
impl StructuralPartialEq for Pragma
Auto Trait Implementations§
impl !Freeze for Pragma
impl RefUnwindSafe for Pragma
impl Send for Pragma
impl Sync for Pragma
impl Unpin for Pragma
impl UnwindSafe for Pragma
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)