Package it.unimi.dsi.fastutil.shorts

Interface Short2ByteFunction

All Superinterfaces:
it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>, java.util.function.Function<java.lang.Short,​java.lang.Byte>, java.util.function.IntUnaryOperator
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface
public interface Short2ByteFunction
extends it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>, java.util.function.IntUnaryOperator
A type-specific Function; provides some additional methods that use polymorphism to avoid (un)boxing.

Type-specific versions of get(), put() and remove() cannot rely on null to denote absence of a key. Rather, they return a default return value, which is set to 0/false at creation, but can be changed using the defaultReturnValue() method.

For uniformity reasons, even functions returning objects implement the default return value (of course, in this case the default return value is initialized to null).

The default implementation of optional operations just throw an UnsupportedOperationException, except for the type-specific containsKey(), which return true. Generic versions of accessors delegate to the corresponding type-specific counterparts following the interface rules.

Warning: to fall in line as much as possible with the standard map interface, it is required that standard versions of get(), put() and remove() for maps with primitive-type keys or values return null to denote missing keys rather than wrap the default return value in an object. In case both keys and values are reference types, the default return value must be returned instead, thus violating the standard map interface when the default return value is not null.

See Also:
Function

  • Method Summary

    Modifier and Type Method Description
    default <T> java.util.function.Function<java.lang.Short,​T> andThen​(java.util.function.Function<? super java.lang.Byte,​? extends T> after)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default Short2ByteFunction andThenByte​(Byte2ByteFunction after)  
    default Short2CharFunction andThenChar​(Byte2CharFunction after)  
    default it.unimi.dsi.fastutil.shorts.Short2DoubleFunction andThenDouble​(it.unimi.dsi.fastutil.bytes.Byte2DoubleFunction after)  
    default it.unimi.dsi.fastutil.shorts.Short2FloatFunction andThenFloat​(Byte2FloatFunction after)  
    default it.unimi.dsi.fastutil.shorts.Short2IntFunction andThenInt​(it.unimi.dsi.fastutil.bytes.Byte2IntFunction after)  
    default it.unimi.dsi.fastutil.shorts.Short2LongFunction andThenLong​(it.unimi.dsi.fastutil.bytes.Byte2LongFunction after)  
    default <T> it.unimi.dsi.fastutil.shorts.Short2ObjectFunction<T> andThenObject​(it.unimi.dsi.fastutil.bytes.Byte2ObjectFunction<? extends T> after)  
    default <T> Short2ReferenceFunction<T> andThenReference​(Byte2ReferenceFunction<? extends T> after)  
    default it.unimi.dsi.fastutil.shorts.Short2ShortFunction andThenShort​(Byte2ShortFunction after)  
    default int applyAsInt​(int operand)
    Deprecated.
    Please use primitive types which do not have to be widened as keys.
    default <T> java.util.function.Function<T,​java.lang.Byte> compose​(java.util.function.Function<? super T,​? extends java.lang.Short> before)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default Byte2ByteFunction composeByte​(Byte2ShortFunction before)  
    default Char2ByteFunction composeChar​(Char2ShortFunction before)  
    default it.unimi.dsi.fastutil.doubles.Double2ByteFunction composeDouble​(it.unimi.dsi.fastutil.doubles.Double2ShortFunction before)  
    default Float2ByteFunction composeFloat​(it.unimi.dsi.fastutil.floats.Float2ShortFunction before)  
    default it.unimi.dsi.fastutil.ints.Int2ByteFunction composeInt​(it.unimi.dsi.fastutil.ints.Int2ShortFunction before)  
    default it.unimi.dsi.fastutil.longs.Long2ByteFunction composeLong​(it.unimi.dsi.fastutil.longs.Long2ShortFunction before)  
    default <T> it.unimi.dsi.fastutil.objects.Object2ByteFunction<T> composeObject​(it.unimi.dsi.fastutil.objects.Object2ShortFunction<? super T> before)  
    default <T> Reference2ByteFunction<T> composeReference​(Reference2ShortFunction<? super T> before)  
    default Short2ByteFunction composeShort​(it.unimi.dsi.fastutil.shorts.Short2ShortFunction before)  
    default boolean containsKey​(short key)
    Returns true if this function contains a mapping for the specified key.
    default boolean containsKey​(java.lang.Object key)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default byte defaultReturnValue()
    Gets the default return value.
    default void defaultReturnValue​(byte rv)
    Sets the default return value (optional operation).
    byte get​(short key)
    Returns the value to which the given key is mapped.
    default java.lang.Byte get​(java.lang.Object key)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default byte getOrDefault​(short key, byte defaultValue)
    Returns the value associated by this function to the specified key, or give the specified value if not present.
    default java.lang.Byte getOrDefault​(java.lang.Object key, java.lang.Byte defaultValue)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default byte put​(short key, byte value)
    Adds a pair to the map (optional operation).
    default java.lang.Byte put​(java.lang.Short key, java.lang.Byte value)
    Deprecated.
    Please use the corresponding type-specific method instead.
    default byte remove​(short key)
    Removes the mapping with the given key (optional operation).
    default java.lang.Byte remove​(java.lang.Object key)
    Deprecated.
    Please use the corresponding type-specific method instead.

    Methods inherited from interface it.unimi.dsi.fastutil.Function

    apply, clear, size

    Methods inherited from interface java.util.function.IntUnaryOperator

    andThen, compose

  • Method Details

    • applyAsInt

      @Deprecated default int applyAsInt​(int operand)
      Deprecated.
      Please use primitive types which do not have to be widened as keys.
      Specified by:
      applyAsInt in interface java.util.function.IntUnaryOperator
      Throws:
      java.lang.IllegalArgumentException - If the given operand is not an element of the key domain.
      Since:
      8.0.0
      Implementation Specification:
      This default implementation delegates to the type-specific get() method after narrowing down the key to the actual key type, throwing an exception if the given key cannot be represented in the restricted domain. This is done for interoperability with the Java 8 function environment. The use of this method is discouraged, as unexpected errors can occur. Instead, the corresponding classes should be used (e.g., Int2IntFunction instead of Short2IntFunction).

    • put

      default byte put​(short key, byte 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)

    • get

      byte get​(short 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)

    • getOrDefault

      default byte getOrDefault​(short key, byte defaultValue)
      Returns the value associated by this function to the specified key, or give the specified value if not present.
      Parameters:
      key - the key.
      defaultValue - the value to return if not present.
      Returns:
      the corresponding value, or defaultValue if no value was present for the given key.
      Since:
      8.5.0
      See Also:
      Function.getOrDefault(Object, Object)

    • remove

      default byte remove​(short 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 java.lang.Byte put​(java.lang.Short key, java.lang.Byte value)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      put in interface it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>

    • get

      @Deprecated default java.lang.Byte get​(java.lang.Object key)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      get in interface it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>

    • getOrDefault

      @Deprecated default java.lang.Byte getOrDefault​(java.lang.Object key, java.lang.Byte defaultValue)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      getOrDefault in interface it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>

    • remove

      @Deprecated default java.lang.Byte remove​(java.lang.Object key)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      remove in interface it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>

    • containsKey

      default boolean containsKey​(short key)
      Returns true if this function contains a mapping for the specified key.

      Note that for some kind of functions (e.g., hashes) this method will always return true. In particular, this default implementation always returns true.

      Parameters:
      key - the key.
      Returns:
      true if this function associates a value to key.
      See Also:
      Function.containsKey(Object)

    • containsKey

      @Deprecated default boolean containsKey​(java.lang.Object key)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      containsKey in interface it.unimi.dsi.fastutil.Function<java.lang.Short,​java.lang.Byte>

    • defaultReturnValue

      default void defaultReturnValue​(byte 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 byte 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.

    • compose

      @Deprecated default <T> java.util.function.Function<T,​java.lang.Byte> compose​(java.util.function.Function<? super T,​? extends java.lang.Short> before)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      compose in interface java.util.function.Function<java.lang.Short,​java.lang.Byte>

    • andThen

      @Deprecated default <T> java.util.function.Function<java.lang.Short,​T> andThen​(java.util.function.Function<? super java.lang.Byte,​? extends T> after)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      andThen in interface java.util.function.Function<java.lang.Short,​java.lang.Byte>

    • andThenByte

      default Short2ByteFunction andThenByte​(Byte2ByteFunction after)

    • composeByte

      default Byte2ByteFunction composeByte​(Byte2ShortFunction before)

    • andThenShort

      default it.unimi.dsi.fastutil.shorts.Short2ShortFunction andThenShort​(Byte2ShortFunction after)

    • composeShort

      default Short2ByteFunction composeShort​(it.unimi.dsi.fastutil.shorts.Short2ShortFunction before)

    • andThenInt

      default it.unimi.dsi.fastutil.shorts.Short2IntFunction andThenInt​(it.unimi.dsi.fastutil.bytes.Byte2IntFunction after)

    • composeInt

      default it.unimi.dsi.fastutil.ints.Int2ByteFunction composeInt​(it.unimi.dsi.fastutil.ints.Int2ShortFunction before)

    • andThenLong

      default it.unimi.dsi.fastutil.shorts.Short2LongFunction andThenLong​(it.unimi.dsi.fastutil.bytes.Byte2LongFunction after)

    • composeLong

      default it.unimi.dsi.fastutil.longs.Long2ByteFunction composeLong​(it.unimi.dsi.fastutil.longs.Long2ShortFunction before)

    • andThenChar

      default Short2CharFunction andThenChar​(Byte2CharFunction after)

    • composeChar

      default Char2ByteFunction composeChar​(Char2ShortFunction before)

    • andThenFloat

      default it.unimi.dsi.fastutil.shorts.Short2FloatFunction andThenFloat​(Byte2FloatFunction after)

    • composeFloat

      default Float2ByteFunction composeFloat​(it.unimi.dsi.fastutil.floats.Float2ShortFunction before)

    • andThenDouble

      default it.unimi.dsi.fastutil.shorts.Short2DoubleFunction andThenDouble​(it.unimi.dsi.fastutil.bytes.Byte2DoubleFunction after)

    • composeDouble

      default it.unimi.dsi.fastutil.doubles.Double2ByteFunction composeDouble​(it.unimi.dsi.fastutil.doubles.Double2ShortFunction before)

    • andThenObject

      default <T> it.unimi.dsi.fastutil.shorts.Short2ObjectFunction<T> andThenObject​(it.unimi.dsi.fastutil.bytes.Byte2ObjectFunction<? extends T> after)

    • composeObject

      default <T> it.unimi.dsi.fastutil.objects.Object2ByteFunction<T> composeObject​(it.unimi.dsi.fastutil.objects.Object2ShortFunction<? super T> before)

    • andThenReference

      default <T> Short2ReferenceFunction<T> andThenReference​(Byte2ReferenceFunction<? extends T> after)

    • composeReference

      default <T> Reference2ByteFunction<T> composeReference​(Reference2ShortFunction<? super T> before)