Struct Map 

pub struct Map { /* private fields */ }

A map of MDC entries.

Implementations

impl Map

pub fn new() -> Self

Returns a new, empty map.

pub fn clear(&mut self)

Removes all entries from the map.

pub fn len(&self) -> usize

Returns the number of entries in the map.

pub fn is_empty(&self) -> bool

Determines if the map is empty.

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

Looks up a value in the map.

pub fn contains_key(&self, key: &str) -> bool

Determines if the map contains the specified key.

pub fn insert<V>(&mut self, key: &'static str, value: V) -> Option<Any>

where V: Serialize,

Inserts a new entry into the map, returning the old value corresponding to the key.

Panics

Panics if the value cannot be serialized into an Any.

pub fn remove(&mut self, key: &str) -> Option<Any>

Removes an entry from the map, returning its value.

pub fn iter(&self) -> Iter<'_>

Returns an iterator over the entries in the map.

Trait Implementations

impl Clone for Map

fn clone(&self) -> Map

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Map

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

Formats the value using the given formatter.

impl Default for Map

fn default() -> Self

Returns the “default value” for a type.

impl<'a> IntoIterator for &'a Map

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

The type of the elements being iterated over.

type IntoIter = Iter<'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 Map

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

impl StructuralPartialEq for Map