Struct HeaderMap 

pub struct HeaderMap { /* private fields */ }

A set of NATS headers

HeaderMap is a multimap of HeaderName.

Implementations

impl HeaderMap

pub const fn new() -> Self

Create an empty HeaderMap

The map will be created without any capacity. This function will not allocate.

Consider using the FromIterator, Extend implementations if the final length is known upfront.

pub fn get(&self, name: &HeaderName) -> Option<&HeaderValue>

pub fn get_all<'a>( &'a self, name: &HeaderName, ) -> impl DoubleEndedIterator<Item = &'a HeaderValue> + use<'a>

pub fn insert(&mut self, name: HeaderName, value: HeaderValue)

pub fn append(&mut self, name: HeaderName, value: HeaderValue)

pub fn remove(&mut self, name: &HeaderName)

pub fn keys_len(&self) -> usize

Returns the number of keys stored in the map

This number will be less than or equal to HeaderMap::len.

pub fn len(&self) -> usize

Returns the number of headers stored in the map

This number represents the total number of values stored in the map. This number can be greater than or equal to the number of keys stored.

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements

pub fn clear(&mut self)

Clear the map, removing all key-value pairs. Keeps the allocated memory for reuse

Trait Implementations

impl Clone for HeaderMap

fn clone(&self) -> HeaderMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HeaderMap

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

Formats the value using the given formatter.

impl Default for HeaderMap

fn default() -> Self

Returns the “default value” for a type.

impl Extend<(HeaderName, HeaderValue)> for HeaderMap

fn extend<T: IntoIterator<Item = (HeaderName, HeaderValue)>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<(HeaderName, HeaderValue)> for HeaderMap

fn from_iter<I: IntoIterator<Item = (HeaderName, HeaderValue)>>(iter: I) -> Self

Creates a value from an iterator.

impl PartialEq for HeaderMap

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for HeaderMap

impl StructuralPartialEq for HeaderMap