Struct ChainMap 

pub struct ChainMap { /* private fields */ }

A chain of maps where lookup falls through parent layers.

Implementations

impl ChainMap

pub fn new() -> Self

pub fn push_layer(&mut self)

pub fn pop_layer(&mut self) -> bool

pub fn layer_count(&self) -> usize

pub fn set(&mut self, key: &str, value: &str)

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

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

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

pub fn top_layer_count(&self) -> usize

pub fn total_entries(&self) -> usize

pub fn all_keys(&self) -> Vec<String>

pub fn flatten(&self) -> HashMap<String, String>

pub fn clear_top(&mut self)

Trait Implementations

impl Clone for ChainMap

fn clone(&self) -> ChainMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChainMap

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

Formats the value using the given formatter.

impl Default for ChainMap

fn default() -> Self

Returns the “default value” for a type.