Class Object2ObjectFunctions

java.lang.Object
it.unimi.dsi.fastutil.objects.Object2ObjectFunctions

public final class Object2ObjectFunctions
extends Object
A class providing static methods and objects that do useful things with type-specific functions.
See Also:
Function, Collections
  • Field Details

  • Method Details

    • singleton

      public static <K,​ V> Object2ObjectFunction<K,​V> singleton​(K key, V value)
      Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

      Note that albeit the returned function is immutable, its default return value may be changed.

      Parameters:
      key - the only key of the returned function.
      value - the only value of the returned function.
      Returns:
      a type-specific immutable function containing just the pair &lt;key,value&gt;.
    • synchronize

      public static <K,​ V> Object2ObjectFunction<K,​V> synchronize​(Object2ObjectFunction<K,​V> f)
      Returns a synchronized type-specific function backed by the given type-specific function.
      Parameters:
      f - the function to be wrapped in a synchronized function.
      Returns:
      a synchronized view of the specified function.
      See Also:
      Collections.synchronizedMap(java.util.Map)
    • synchronize

      public static <K,​ V> Object2ObjectFunction<K,​V> synchronize​(Object2ObjectFunction<K,​V> f, Object sync)
      Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.
      Parameters:
      f - the function to be wrapped in a synchronized function.
      sync - an object that will be used to synchronize the access to the function.
      Returns:
      a synchronized view of the specified function.
      See Also:
      Collections.synchronizedMap(java.util.Map)
    • unmodifiable

      public static <K,​ V> Object2ObjectFunction<K,​V> unmodifiable​(Object2ObjectFunction<K,​V> f)
      Returns an unmodifiable type-specific function backed by the given type-specific function.
      Parameters:
      f - the function to be wrapped in an unmodifiable function.
      Returns:
      an unmodifiable view of the specified function.
      See Also:
      Collections.unmodifiableMap(java.util.Map)