Package org.meeuw.math

Class Streams

java.lang.Object

org.meeuw.math.Streams

public final class Streams
extends Object

Since:

0.4

Author:

Michiel Meeuwissen

Field Summary

Fields

Modifier and Type	Field	Description
static int	MAX_THREADS

Method Summary

Modifier and Type	Method	Description
static Stream<BigInteger>	bigIntegerStream(boolean includeNegatives)
static Stream<BigInteger>	bigIntegerStream(BigInteger start, boolean includeNegatives)
static <E1,E2,F> Stream<F>	diagonalStream(Function<Long,Stream<E1>> stream1, Supplier<Stream<E2>> stream2, BiFunction<E1,E2,F> combiner)	Contains the logic to combine two streams.
static <E1,E2,F> Stream<F>	diagonalStream(Supplier<Stream<E1>> stream1, Supplier<Stream<E2>> stream2, BiFunction<E1,E2,F> combiner)	Defaulting version of diagonalStream(Function, Supplier, BiFunction).
static Stream<BigInteger>	reverseBigIntegerStream(BigInteger start, boolean includeNegatives)
static <E> Stream<E>	reverseStream(Stream<E> stream, long start)	Reverses a stream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_THREADS

public static final int MAX_THREADS

See Also:

Constant Field Values

Method Detail

bigIntegerStream

public static Stream<BigInteger> bigIntegerStream(boolean includeNegatives)

bigIntegerStream

public static Stream<BigInteger> bigIntegerStream(BigInteger start,
                                                  boolean includeNegatives)

reverseBigIntegerStream

public static Stream<BigInteger> reverseBigIntegerStream(BigInteger start,
                                                         boolean includeNegatives)

diagonalStream

public static <E1,E2,F> Stream<F> diagonalStream(Function<Long,Stream<E1>> stream1,
                                                             Supplier<Stream<E2>> stream2,
                                                             BiFunction<E1,E2,F> combiner)

Contains the logic to combine two streams. They are found by tracing diagonals in the plain spanned by the two stream.

Parameters:

stream1 - A function to create new stream, which returns all values from the nth value down to the first

stream2 - A supplier to create a new stream

combiner - A bifunction to combine the two values supplied by the two stream to one new value

diagonalStream

public static <E1,E2,F> Stream<F> diagonalStream(Supplier<Stream<E1>> stream1,
                                                             Supplier<Stream<E2>> stream2,
                                                             BiFunction<E1,E2,F> combiner)

Defaulting version of diagonalStream(Function, Supplier, BiFunction).

Parameters:

stream1 - The first stream, which will be reversed using reverseStream(Stream, long)

reverseStream

public static <E> Stream<E> reverseStream(Stream<E> stream,
                                          long start)

Reverses a stream. This happens by collecting it to al list first, and then stream that backwards.*