Package org.sonar.java.collections

Interface PMap<K,​V>

Type Parameters:
K - the type of keys maintained by this map
V - the type of mapped values
public interface PMap<K,​V>
Persistent (functional) Map.
Author:
Evgeny Mandrikov

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    forEach​(BiConsumer<K,​V> action)
    Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
    V
    get​(K key)
     
    boolean
    isEmpty()
     
    PMap<K,​V>
    put​(K key, V value)
     
    PMap<K,​V>
    remove​(K key)
     
    String
    toString()
    The string representation consists of a list of key-value mappings in the ascending order of hash codes of keys.

  • Method Details

    • put

      PMap<K,​V> put​(K key, V value)
      Returns:
      new map with added key-value pair, or this if map already contains given key-value pair

    • remove

      PMap<K,​V> remove​(K key)
      Returns:
      new map with removed key, or this if map does not contain given key

    • get

      @Nullable V get​(K key)
      Returns:
      value associated with given key, or null if not found

    • forEach

      void forEach​(BiConsumer<K,​V> action)
      Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.

    • isEmpty

      boolean isEmpty()
      Returns:
      true if this map contains no elements

    • toString

      String toString()
      The string representation consists of a list of key-value mappings in the ascending order of hash codes of keys. If two keys have same hash code, then their relative order is arbitrary, but stable.
      Overrides:
      toString in class Object
      Returns:
      a string representation of this map