Class HashMap<Key, Value>

constructor

• new HashMap<Key extends HashMapKey, Value>(): HashMap<Key, Value>

  Creates an empty HashMap that uses the operator === for key and value comparisons.

  Type Parameters

  • Key extends HashMapKey
  • Value

  Returns HashMap<Key, Value>

• new HashMap<Key extends HashMapKey, Value>(
      other: HashMap<Key, Value>,
  ): HashMap<Key, Value>

  Creates a copy from the specified HashMap.

  Type Parameters

  • Key extends HashMapKey
  • Value

  Parameters

  • other: HashMap<Key, Value>

    The HashMap to copy.

  Returns HashMap<Key, Value>

• new HashMap<Key extends HashMapKey, Value>(
      keyComparator: (k1: Key, k2: Key) => boolean,
  ): HashMap<Key, Value>

  Creates an empty HashMap that uses the specified key comparator for key comparisons.

  Type Parameters

  • Key extends HashMapKey
  • Value

  Parameters

  • keyComparator: (k1: Key, k2: Key) => boolean

    A function that compares two keys for equality.

  Returns HashMap<Key, Value>

Readonlysize

[iterator]

• "[iterator]"(): IterableIterator<[Key, Value]>

  Returns an iterator over the key-value pairs in the HashMap.

  Returns IterableIterator<[Key, Value]>

  An iterator of [key, value] pairs.

clear

• clear(): void

  Removes all entries from the HashMap.

  Returns void

delete

• delete(key: Key): Value

  Deletes the entry associated with the specified key.

  Parameters

  • key: Key

    The key of the entry to delete.

  Returns Value

  The value associated with the deleted key, or undefined if the key did not exist.

entries

• entries(): IterableIterator<[Key, Value]>

  Returns an iterable of key-value pairs in the HashMap.

  Returns IterableIterator<[Key, Value]>

  An iterable iterator of [key, value] pairs.

forEach

• forEach(fn: (value: Value, key: Key) => void, thisArg?: object): void

  Executes a provided function once for each key-value pair in the HashMap.

  Parameters

  • fn: (value: Value, key: Key) => void

    The function to execute for each entry.

  • OptionalthisArg: object

    Optional. Value to use as this when executing fn.

  Returns void

get

• get(key: Key): Value

  Retrieves the value associated with the specified key.

  Parameters

  • key: Key

    The key of the entry to retrieve.

  Returns Value

  The value associated with the key, or undefined if the key does not exist.

has

• has(key: Key): boolean

  Checks if the specified key exists in the HashMap.

  Parameters

  • key: Key

    The key to check for existence.

  Returns boolean

  True if the key exists, false otherwise.

keys

• keys(): IterableIterator<Key>

  Returns an iterable of keys in the HashMap.

  Returns IterableIterator<Key>

  An iterable iterator of keys.

set

• set(key: Key, value: Value): void

  Adds a new entry with a specified key and value to this HashMap, or updates an existing entry if the key already exists.

  Parameters

  • key: Key

    The key of the entry.

  • value: Value

    The value of the entry.

  Returns void

values

• values(): IterableIterator<Value>

  Returns an iterable of values in the HashMap.

  Returns IterableIterator<Value>

  An iterable iterator of values.