Interface Object2LongFunction<K>

    • Method Summary

      Modifier and Type Method Description
      default long applyAsLong​(K operand)
      default long defaultReturnValue()
      Gets the default return value.
      default void defaultReturnValue​(long rv)
      Sets the default return value (optional operation).
      default Long get​(Object key)
      Deprecated.
      Please use the corresponding type-specific method instead.
      long getLong​(Object key)
      Returns the value to which the given key is mapped.
      default long put​(K key, long value)
      Adds a pair to the map (optional operation).
      default Long put​(K key, Long value)
      Deprecated.
      Please use the corresponding type-specific method instead.
      default Long remove​(Object key)
      Deprecated.
      Please use the corresponding type-specific method instead.
      default long removeLong​(Object key)
      Removes the mapping with the given key (optional operation).
    • Method Detail

      • put

        default long put​(K key,
                         long value)
        Adds a pair to the map (optional operation).
        Parameters:
        key - the key.
        value - the value.
        Returns:
        the old value, or the default return value if no value was present for the given key.
        See Also:
        Function.put(Object,Object)
      • getLong

        long getLong​(Object key)
        Returns the value to which the given key is mapped.
        Parameters:
        key - the key.
        Returns:
        the corresponding value, or the default return value if no value was present for the given key.
        See Also:
        Function.get(Object)
      • removeLong

        default long removeLong​(Object key)
        Removes the mapping with the given key (optional operation).
        Parameters:
        key - the key.
        Returns:
        the old value, or the default return value if no value was present for the given key.
        See Also:
        Function.remove(Object)
      • put

        @Deprecated
        default Long put​(K key,
                         Long value)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Associates the specified value with the specified key in this function (optional operation).
        Specified by:
        put in interface Function<K,​Long>
        Parameters:
        key - the key.
        value - the value.
        Returns:
        the old value, or null if no value was present for the given key.
        See Also:
        Map.put(Object,Object)
      • get

        @Deprecated
        default Long get​(Object key)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Returns the value associated by this function to the specified key.
        Specified by:
        get in interface Function<K,​Long>
        Parameters:
        key - the key.
        Returns:
        the corresponding value, or null if no value was present for the given key.
        See Also:
        Map.get(Object)
      • remove

        @Deprecated
        default Long remove​(Object key)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Removes this key and the associated value from this function if it is present (optional operation).
        Specified by:
        remove in interface Function<K,​Long>
        Parameters:
        key - the key.
        Returns:
        the old value, or null if no value was present for the given key.
        See Also:
        Map.remove(Object)
      • defaultReturnValue

        default void defaultReturnValue​(long rv)
        Sets the default return value (optional operation). This value must be returned by type-specific versions of get(), put() and remove() to denote that the map does not contain the specified key. It must be 0/false/null by default.
        Parameters:
        rv - the new default return value.
        See Also:
        defaultReturnValue()
      • defaultReturnValue

        default long defaultReturnValue()
        Gets the default return value.

        This default implementation just return the default null value of the type (null for objects, 0 for scalars, false for Booleans).

        Returns:
        the current default return value.