NKeyMap

NKeyMap is a multi-key map where each stored value can be accessed thanks to a set of distinct keys. NKeyMap does not duplicate values and allows you to quickly access your stored objects.

Example

// Require library
const  NKeyMap  =  require('nkeymap');
 
// Instanciate map
const  nKeyMap  =  new  NKeyMap();
 
// Push values you want to store with multiple keys for each
nKeyMap.set(['a', 'b', 'c'], 12); 
nKeyMap.set('d', 'myStoredString');
nKeyMap.set(['key1', 'f'], { myProp1: 52, myProp2: true });
 
// Access stored values thanks to keys
nKeyMap.get('a');       // === 12
nKeyMap.get('b');       // === 12
nKeyMap.get('c');       // === 12
 
nKeyMap.get('d');       // === 'myStoredString'
 
nKeyMap.get('key1');    // === { myProp1: 52, myProp2: true }
nKeyMap.get('f');       // === { myProp1: 52, myProp2: true }
 
// Get current map size
nKeyMap.size();         // === 3
 
// Clear values from map
nKeyMap.clean();
 
nKeyMap.size();         // === 0
 
// When removed or not existing value
nKeyMap.get('a');               // === null
nKeyMap.get('notExistskey');    // === null

Functions

constructor

Create a new multi-key map

number maxElements (optional) : Maximum length of the map. If the size of the map exceeds the fixed limit, the first added elements are removed from the map (FIFO)

By default, the map does not have a defined limit

get

Get your stored value thanks to one of the keys you had specified when you called the 'set' function

string key : One of the keys that is referred to your stored value

set

Push a new value into the map with some keys to access it later

Array<string> keys : Array of keys that will allow you to access to your value later

Object value : Value you want store into map

clean

Remove all values from the map

size

Get current count of elements available in the map