Class Byte2ByteFunctions

java.lang.Object
it.unimi.dsi.fastutil.bytes.Byte2ByteFunctions

public final class Byte2ByteFunctions
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 Byte2ByteFunction singleton​(byte key, byte 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 <key,value>.
    • singleton

      public static Byte2ByteFunction singleton​(Byte key, Byte 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 <key,value>.
    • synchronize

      public static Byte2ByteFunction synchronize​(Byte2ByteFunction 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 Byte2ByteFunction synchronize​(Byte2ByteFunction 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 Byte2ByteFunction unmodifiable​(Byte2ByteFunction 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)
    • primitive

      public static Byte2ByteFunction primitive​(Function<? super Byte,​? extends Byte> f)
      Returns a (partial) type-specific function based on the given total generic function.

      The returned function contains all keys which are not mapped to null. If the function already is a primitive function, it is returned without changes.

      Warning: If the given function is a “widened” primitive function (e.g. an Int2IntFunction given to Short2ShortFunctions), it still is wrapped into a proxy, decreasing performance.

      Parameters:
      f - the function to be converted to a type-specific function.
      Returns:
      a primitive view of the specified function.
      Throws:
      NullPointerException - if f is null.
      Since:
      8.1.0
      See Also:
      Byte2ByteFunctions.PrimitiveFunction