Struct QueryString 

pub struct QueryString(/* private fields */);

Query Parameters

let query = QueryString::from_iter([
    ("foo", "bar"),
    ("fizz", "buzz"),
]);

assert_eq!(query.first("foo"), Some("bar"));
assert_eq!(query.first("fizz"), Some("buzz"));
assert!(query.first("nonexistent").is_none());

---

Implementations

impl QueryString

pub fn first(&self, key: &str) -> Option<&str>

Returns the first occurrence of a value for a given key, if it exists.

pub fn values_for(&self, key: &str) -> impl Iterator<Item = &str>

Provides an iterator over all values for a given key.

pub fn add(&mut self, key: impl Into<String>, value: impl Into<String>)

Adds a new key-value pair to the query.

pub fn insert_many<P, Q>(&mut self, params: P)

where P: IntoIterator<Item = Q>, Q: Into<QueryParameter>,

adds many key-value pairs to the query.

pub fn is_empty(&self) -> bool

Tests if the query is empty.

pub fn len(&self) -> usize

Return the number of query parameters.

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

Returns an iterator over the query parameters.

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut QueryParameter>

Returns a mutable iterator over the query parameters.

Trait Implementations

impl Clone for QueryString

fn clone(&self) -> QueryString

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryString

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

Formats the value using the given formatter.

impl Default for QueryString

fn default() -> QueryString

Returns the “default value” for a type.

impl<T> FromIterator<T> for QueryString

where T: Into<QueryParameter>,

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self

Creates a value from an iterator.

impl IntoIterator for QueryString

type Item = QueryParameter

The type of the elements being iterated over.

type IntoIter = IntoIter<QueryParameter>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for QueryString

fn eq(&self, other: &QueryString) -> 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 QueryString

impl StructuralPartialEq for QueryString