Struct KeyValues 

pub struct KeyValues<'a>(/* private fields */);

A collection of key-value pairs.

Implementations

impl<'a> KeyValues<'a>

pub fn len(&self) -> usize

Get the number of key-value pairs.

pub fn is_empty(&self) -> bool

Check if there are no key-value pairs.

pub fn iter(&self) -> KeyValuesIter<'a>

Get an iterator over the key-value pairs.

pub fn get(&self, key: &str) -> Option<Value<'a>>

Get the value for a given key.

If the key appears multiple times in the source then which key is returned is undetermined.

pub fn visit(&self, visitor: &mut dyn Visitor) -> Result<(), Error>

Visit the key-value pairs with the provided visitor.

Trait Implementations

impl Clone for KeyValues<'_>

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 KeyValues<'_>

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

Formats the value using the given formatter.

impl Default for KeyValues<'_>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> From<&'a [(Key<'a>, ValueBag<'a>)]> for KeyValues<'a>

fn from(kvs: &'a [(Key<'a>, Value<'a>)]) -> Self

Converts to this type from the input type.

impl<'a> From<&'a [(KeyOwned, OwnedValueBag)]> for KeyValues<'a>

fn from(kvs: &'a [(KeyOwned, ValueOwned)]) -> Self

Converts to this type from the input type.

impl<'a> IntoIterator for KeyValues<'a>

type Item = (Key<'a>, ValueBag<'a>)

The type of the elements being iterated over.

type IntoIter = KeyValuesIter<'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.