pub struct Headers(/* private fields */);
Expand description
HTTP headers.
Implementations§
Source§impl Headers
impl Headers
Sourcepub fn get(&self, name: impl AsHeaderName) -> Option<HeaderValue>
pub fn get(&self, name: impl AsHeaderName) -> Option<HeaderValue>
Get the value associated with the given name. If there are multiple values associated with
the name, then the first one is returned. Use get_all
to get all values associated with
a given name. Returns None if there are no values associated with the name.
Sourcepub fn get_all(
&self,
name: impl AsHeaderName,
) -> impl Iterator<Item = HeaderValue>
pub fn get_all( &self, name: impl AsHeaderName, ) -> impl Iterator<Item = HeaderValue>
Get all of the values corresponding to a name. If the name is not present, an empty list is returned. However, if the name is present but empty, this is represented by a list with one or more empty values present.
Sourcepub fn has(&self, name: impl AsHeaderName) -> bool
pub fn has(&self, name: impl AsHeaderName) -> bool
Returns true if the map contains a value for the specified name.
Sourcepub fn set<V: AsHeaderValue>(
&mut self,
name: impl AsHeaderName,
values: impl IntoIterator<Item = V>,
)
pub fn set<V: AsHeaderValue>( &mut self, name: impl AsHeaderName, values: impl IntoIterator<Item = V>, )
Set all of the values for a name. Clears any existing values for that name, if they have been set.
Sourcepub fn remove(&mut self, name: impl AsHeaderName) -> Option<HeaderValue>
pub fn remove(&mut self, name: impl AsHeaderName) -> Option<HeaderValue>
Removes a name from the map, returning the value associated with the name. Returns None if the map does not contain the name. If there are multiple values associated with the name, then the first one is returned.
Sourcepub fn append(&mut self, name: impl AsHeaderName, value: impl AsHeaderValue)
pub fn append(&mut self, name: impl AsHeaderName, value: impl AsHeaderValue)
Append a value for a name. Does not change or delete any existing values for that name.
Sourcepub fn iter(&self) -> impl Iterator<Item = (HeaderName, HeaderValue)>
pub fn iter(&self) -> impl Iterator<Item = (HeaderName, HeaderValue)>
An iterator visiting all name-value pairs. The iteration order is arbitrary, but consistent across platforms for the same crate version. Each name will be yielded once per associated value. So, if a name has 3 associated values, it will be yielded 3 times.
Trait Implementations§
Auto Trait Implementations§
impl !Freeze for Headers
impl RefUnwindSafe for Headers
impl Send for Headers
impl Sync for Headers
impl Unpin for Headers
impl UnwindSafe for Headers
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