Class Long2LongArrayMap

    • Constructor Detail

      • Long2LongArrayMap

        public Long2LongArrayMap​(long[] key,
                                 long[] value)
        Creates a new empty array map with given key and value backing arrays. The resulting map will have as many entries as the given arrays.

        It is responsibility of the caller that the elements of key are distinct.

        Parameters:
        key - the key array.
        value - the value array (it must have the same length as key).
      • Long2LongArrayMap

        public Long2LongArrayMap()
        Creates a new empty array map.
      • Long2LongArrayMap

        public Long2LongArrayMap​(int capacity)
        Creates a new empty array map of given capacity.
        Parameters:
        capacity - the initial capacity.
      • Long2LongArrayMap

        public Long2LongArrayMap​(Long2LongMap m)
        Creates a new empty array map copying the entries of a given map.
        Parameters:
        m - a map.
      • Long2LongArrayMap

        public Long2LongArrayMap​(Map<? extends Long,​? extends Long> m)
        Creates a new empty array map copying the entries of a given map.
        Parameters:
        m - a map.
      • Long2LongArrayMap

        public Long2LongArrayMap​(long[] key,
                                 long[] value,
                                 int size)
        Creates a new array map with given key and value backing arrays, using the given number of elements.

        It is responsibility of the caller that the first size elements of key are distinct.

        Parameters:
        key - the key array.
        value - the value array (it must have the same length as key).
        size - the number of valid elements in key and value.
    • Method Detail

      • long2LongEntrySet

        public Long2LongMap.FastEntrySet long2LongEntrySet()
        Description copied from interface: Long2LongMap
        Returns a type-specific set view of the mappings contained in this map.

        This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

        Specified by:
        long2LongEntrySet in interface Long2LongMap
        Returns:
        a type-specific set view of the mappings contained in this map.
        See Also:
        Map.entrySet()
      • keySet

        public LongSet keySet()
        Description copied from class: AbstractLong2LongMap
        Returns a type-specific-set view of the keys of this map.

        The view is backed by the set returned by Map.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

        Specified by:
        keySet in interface Long2LongMap
        Specified by:
        keySet in interface Map<Long,​Long>
        Overrides:
        keySet in class AbstractLong2LongMap
        Returns:
        a set view of the keys of this map; it may be safely cast to a type-specific interface.
        See Also:
        Map.keySet()
      • values

        public LongCollection values()
        Description copied from class: AbstractLong2LongMap
        Returns a type-specific-set view of the values of this map.

        The view is backed by the set returned by Map.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

        Specified by:
        values in interface Long2LongMap
        Specified by:
        values in interface Map<Long,​Long>
        Overrides:
        values in class AbstractLong2LongMap
        Returns:
        a set view of the values of this map; it may be safely cast to a type-specific interface.
        See Also:
        Map.values()
      • clone

        public Long2LongArrayMap clone()
        Returns a deep copy of this map.

        This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.

        Returns:
        a deep copy of this map.