com.github.jlangch.venice.impl.util.vavr

Class Streams

java.lang.Object

com.github.jlangch.venice.impl.util.vavr.Streams

public class Streams
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Streams()

Method Summary

Modifier and Type	Method and Description
static <T> io.vavr.collection.Stream<T>	iterate(java.util.function.Supplier<? extends io.vavr.control.Option<? extends T>> supplier) Generates a (theoretically) infinitely long Stream using a repeatedly invoked supplier that provides a Some for each next value and a None for the end.
static <T> io.vavr.collection.Stream<T>	iterate(T seed, java.util.function.Function<? super T,? extends io.vavr.control.Option<? extends T>> fn) Generates a (theoretically) infinitely long Stream using a function to calculate the next value based on the previous.

Methods inherited from class java.lang.Object

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

Constructor Detail

Streams

public Streams()

Method Detail

iterate

public static <T> io.vavr.collection.Stream<T> iterate(java.util.function.Supplier<? extends io.vavr.control.Option<? extends T>> supplier)

Generates a (theoretically) infinitely long Stream using a repeatedly invoked supplier that provides a Some for each next value and a None for the end. The Supplier will be invoked only that many times until it returns None, and repeated iteration over the stream will produce the same values in the same order, without any further invocations to the Supplier.

Type Parameters:

T - value type

Parameters:

supplier - A Supplier of iterator values

Returns:

A new Stream

iterate

public static <T> io.vavr.collection.Stream<T> iterate(T seed,
                                                       java.util.function.Function<? super T,? extends io.vavr.control.Option<? extends T>> fn)

Generates a (theoretically) infinitely long Stream using a function to calculate the next value based on the previous.

Type Parameters:

T - value type

Parameters:

seed - The first value in the Stream

fn - A function to calculate the next value based on the previous

Returns:

A new Stream