Package io.vavr

Class Tuple0

java.lang.Object

io.vavr.Tuple0

All Implemented Interfaces:

Tuple, java.io.Serializable, java.lang.Comparable<Tuple0>

public final class Tuple0
extends java.lang.Object
implements Tuple, java.lang.Comparable<Tuple0>, java.io.Serializable

A tuple of no elements which can be seen as cartesian product of no components.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static java.util.Comparator<Tuple0>	COMPARATOR	The singleton Tuple0 comparator.
private static Tuple0	INSTANCE	The singleton instance of Tuple0.
private static long	serialVersionUID

Fields inherited from interface io.vavr.Tuple

MAX_ARITY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Tuple0()

Method Summary

Modifier and Type	Method	Description
<T1> Tuple1<T1>	append(T1 t1)	Append a value to this tuple.
<U> U	apply(java.util.function.Supplier<? extends U> f)	Transforms this tuple to an object of type U.
int	arity()	Returns the number of elements of this tuple.
static java.util.Comparator<Tuple0>	comparator()
int	compareTo(Tuple0 that)
<T1> Tuple1<T1>	concat(Tuple1<T1> tuple)	Concat a tuple's values to this tuple.
<T1,T2> Tuple2<T1,T2>	concat(Tuple2<T1,T2> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3> Tuple3<T1,T2,T3>	concat(Tuple3<T1,T2,T3> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3,T4> Tuple4<T1,T2,T3,T4>	concat(Tuple4<T1,T2,T3,T4> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3,T4,T5> Tuple5<T1,T2,T3,T4,T5>	concat(Tuple5<T1,T2,T3,T4,T5> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3,T4,T5,T6> Tuple6<T1,T2,T3,T4,T5,T6>	concat(Tuple6<T1,T2,T3,T4,T5,T6> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3,T4,T5,T6,T7> Tuple7<T1,T2,T3,T4,T5,T6,T7>	concat(Tuple7<T1,T2,T3,T4,T5,T6,T7> tuple)	Concat a tuple's values to this tuple.
<T1,T2,T3,T4,T5,T6,T7,T8> Tuple8<T1,T2,T3,T4,T5,T6,T7,T8>	concat(Tuple8<T1,T2,T3,T4,T5,T6,T7,T8> tuple)	Concat a tuple's values to this tuple.
boolean	equals(java.lang.Object o)
int	hashCode()
static Tuple0	instance()	Returns the singleton instance of Tuple0.
private java.lang.Object	readResolve()	Instance control for object serialization.
Seq<?>	toSeq()	Converts this tuple to a sequence.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

INSTANCE

private static final Tuple0 INSTANCE

The singleton instance of Tuple0.

COMPARATOR

private static final java.util.Comparator<Tuple0> COMPARATOR

The singleton Tuple0 comparator.

Constructor Detail

Tuple0

private Tuple0()

Method Detail

instance

public static Tuple0 instance()

Returns the singleton instance of Tuple0.

Returns:

The singleton instance of Tuple0.

comparator

public static java.util.Comparator<Tuple0> comparator()

arity

public int arity()

Description copied from interface: Tuple

Returns the number of elements of this tuple.

Specified by:

arity in interface Tuple

Returns:

the number of elements.

compareTo

public int compareTo(Tuple0 that)

Specified by:

compareTo in interface java.lang.Comparable<Tuple0>

apply

public <U> U apply(java.util.function.Supplier<? extends U> f)

Transforms this tuple to an object of type U.

Type Parameters:

U - type of the transformation result

Parameters:

f - Transformation which creates a new object of type U based on this tuple's contents.

Returns:

An object of type U

Throws:

java.lang.NullPointerException - if f is null

toSeq

public Seq<?> toSeq()

Description copied from interface: Tuple

Converts this tuple to a sequence.

Specified by:

toSeq in interface Tuple

Returns:

A new Seq.

append

public <T1> Tuple1<T1> append(T1 t1)

Append a value to this tuple.

Type Parameters:

T1 - type of the value to append

Parameters:

t1 - the value to append

Returns:

a new Tuple with the value appended

concat

public <T1> Tuple1<T1> concat(Tuple1<T1> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2> Tuple2<T1,T2> concat(Tuple2<T1,T2> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3> Tuple3<T1,T2,T3> concat(Tuple3<T1,T2,T3> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3,T4> Tuple4<T1,T2,T3,T4> concat(Tuple4<T1,T2,T3,T4> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

T4 - the type of the 4th value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3,T4,T5> Tuple5<T1,T2,T3,T4,T5> concat(Tuple5<T1,T2,T3,T4,T5> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

T4 - the type of the 4th value in the tuple

T5 - the type of the 5th value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3,T4,T5,T6> Tuple6<T1,T2,T3,T4,T5,T6> concat(Tuple6<T1,T2,T3,T4,T5,T6> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

T4 - the type of the 4th value in the tuple

T5 - the type of the 5th value in the tuple

T6 - the type of the 6th value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3,T4,T5,T6,T7> Tuple7<T1,T2,T3,T4,T5,T6,T7> concat(Tuple7<T1,T2,T3,T4,T5,T6,T7> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

T4 - the type of the 4th value in the tuple

T5 - the type of the 5th value in the tuple

T6 - the type of the 6th value in the tuple

T7 - the type of the 7th value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

concat

public <T1,T2,T3,T4,T5,T6,T7,T8> Tuple8<T1,T2,T3,T4,T5,T6,T7,T8> concat(Tuple8<T1,T2,T3,T4,T5,T6,T7,T8> tuple)

Concat a tuple's values to this tuple.

Type Parameters:

T1 - the type of the 1st value in the tuple

T2 - the type of the 2nd value in the tuple

T3 - the type of the 3rd value in the tuple

T4 - the type of the 4th value in the tuple

T5 - the type of the 5th value in the tuple

T6 - the type of the 6th value in the tuple

T7 - the type of the 7th value in the tuple

T8 - the type of the 8th value in the tuple

Parameters:

tuple - the tuple to concat

Returns:

a new Tuple with the tuple values appended

Throws:

java.lang.NullPointerException - if tuple is null

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

readResolve

private java.lang.Object readResolve()

Instance control for object serialization.

Returns:

The singleton instance of Tuple0.

See Also:

Serializable