Struct Headers 

pub struct Headers { /* private fields */ }

Header fields, looked up without regard to case and written in the order they were set.

Implementations

impl Headers

pub fn new() -> Self

An empty map.

pub fn from_pairs<I, N, V>(pairs: I) -> Self

where I: IntoIterator<Item = (N, V)>, N: Into<String>, V: Into<String>,

Build a map from pairs, later pairs replacing earlier ones.

Examples

use lino_rest_api::headers::Headers;

let headers = Headers::from_pairs([("Content-Type", "text/lino")]);
assert_eq!(headers.get("content-type"), Some("text/lino"));

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

The value of a field, or None when it is absent.

pub fn contains(&self, name: &str) -> bool

Whether a field is present.

pub fn insert<N: Into<String>, V: Into<String>>(&mut self, name: N, value: V)

Set a field, replacing any existing one and keeping its position.

pub fn insert_missing<N: Into<String>, V: Into<String>>( &mut self, name: N, value: V, )

Set a field only when it is absent, which is how defaults are applied.

pub fn remove(&mut self, name: &str) -> Option<String>

Remove a field, returning its value when there was one.

pub fn is_empty(&self) -> bool

Whether the map carries no field.

pub fn len(&self) -> usize

How many fields the map carries.

pub fn iter(&self) -> impl Iterator<Item = (&str, &str)>

The fields, in the order they were set.

pub fn extend_missing(&mut self, other: &Headers)

Merge fields from another map, without overwriting what is already set.

Trait Implementations

impl Clone for Headers

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Headers

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

Formats the value using the given formatter.

impl Default for Headers

fn default() -> Self

Returns the “default value” for a type.

impl Display for Headers

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

Formats the value using the given formatter.

impl Eq for Headers

impl<'a> IntoIterator for &'a Headers

type Item = (&'a str, &'a str)

The type of the elements being iterated over.

type IntoIter = Box<dyn Iterator<Item = (&'a str, &'a str)> + 'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for Headers

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Headers