Class HashMap<TKey, TVal>

A Map implementation that maps the Key object to a string using the provided hash function. This ensures that equal objects that are not the same instance are mapped to the same value.

Type Parameters

  • TKey = unknown
  • TVal = unknown

Hierarchy (view full)




[toStringTag]: "HashMap" = 'HashMap'


  • get size(): number
  • Returns number

    the number of elements in the Map.


  • Parameters

    Returns boolean

    true if an element in the Map existed and has been removed, or false if the element does not exist.

  • Returns an iterable of key, value pairs for every entry in the map.

    Returns IterableIterator<[TKey, TVal]>

  • Executes a provided function once per each key/value pair in the Map, in insertion order.


    • callbackfn: ((value: TVal, key: TKey, map: Map<TKey, TVal>) => void)
        • (value, key, map): void
        • Parameters

          Returns void

    • OptionalthisArg: unknown

    Returns void

  • Returns a specified element from the Map object. If the value that is associated to the provided key is an object, then you will get a reference to that object and any change made to that object will effectively modify it inside the Map.


    Returns undefined | TVal

    Returns the element associated with the specified key. If no element is associated with the specified key, undefined is returned.

  • Parameters

    Returns boolean

    boolean indicating whether an element with the specified key exists or not.

  • Adds a new element with a specified key and value to the Map. If an element with the same key already exists, the element will be updated.


    Returns this