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HashMap2

  • java.lang.Object
    • java.util.AbstractMap<K,​V>
      • java.util.HashMap<MapKey2<K1,​K2>,​V>
        • com.dashoptimization.maps.HashMap2<K1,​K2,​V>
  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.util.Map<MapKey2<K1,​K2>,​V> 
    public final class HashMap2<K1,​K2,​V>
extends java.util.HashMap<MapKey2<K1,​K2>,​V>
    A 2-dimensional hash map. Instances of this class map tuples with 2 elements to value and provide some convenience functions to access elements without having to explicitly construct the tuples. Tuples are mapped using their hash codes.
    Since:
    43.00
    See Also:
    Serialized Form

    • Nested Class Summary

      • Nested classes/interfaces inherited from class java.util.AbstractMap

        java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>

      • Nested classes/interfaces inherited from interface java.util.Map

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>

    • Constructor Summary

      Constructor Description
      HashMap2()  

    • Method Summary

      Modifier and Type Method Description
      boolean containsKey​(K1 key1, K2 key2)
      Test whether (key1,key2) exists.
      V get​(K1 key1, K2 key2)
      Get the value for tuple (key1,key2).
      V put​(K1 key1, K2 key2, V value)
      Map (key1,key2) to value.

      • Methods inherited from class java.util.HashMap

        clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

      • Methods inherited from class java.util.AbstractMap

        equals, hashCode, toString

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Map

        equals, hashCode

    • Constructor Detail

      • HashMap2

        public HashMap2()

    • Method Detail

      • get

        public V get​(K1 key1,
             K2 key2)
        Get the value for tuple (key1,key2).
        Parameters:
        key1 - Key for dimension 1.
        key2 - Key for dimension 2.
        Returns:
        null the mapping does not exist.
        Since:
        43.00

      • put

        public V put​(K1 key1,
             K2 key2,
             V value)
        Map (key1,key2) to value.
        Parameters:
        key1 - Key for dimension 1.
        key2 - Key for dimension 2.
        value - The value for (key1,key2).
        Returns:
        the previous value for the mapping.
        Since:
        43.00

      • containsKey

        public boolean containsKey​(K1 key1,
                           K2 key2)
        Test whether (key1,key2) exists.
        Parameters:
        key1 - Key for dimension 1.
        key2 - Key for dimension 2.
        Returns:
        true if (key1,key2) is contained in this map, false otherwise.
        Since:
        43.00
Parent Topic Class Summary

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