cyclops.companion.reactor

Class Fluxs.Instances

java.lang.Object

cyclops.companion.reactor.Fluxs.Instances

Enclosing class:

Fluxs

public static class Fluxs.Instances
extends java.lang.Object

Companion class for creating Type Class instances for working with Fluxs

Constructor Summary

Constructors

Constructor and Description
Instances()

Method Summary

Modifier and Type	Method and Description
static InstanceDefinitions<ReactorWitness.flux>	definitions()
static <T> Foldable<ReactorWitness.flux>	foldable() int sum = Fluxs.foldable() .foldLeft(0, (a,b)->a+b, FluxKind.widen(Flux.of(1,2,3,4))); //10
static <T,R> Functor<ReactorWitness.flux>	functor() Transform a flux, mulitplying every element by 2
static <T,R> Monad<ReactorWitness.flux>	monad() import static com.aol.cyclops.hkt.jdk.FluxKind.widen; FluxKind<Integer> flux = Fluxs.monad() .flatMap(i->widen(FluxX.range(0,i)), widen(Flux.of(1,2,3))) .convert(FluxKind::narrowK);
static <T> MonadPlus<ReactorWitness.flux>	monadPlus() FluxKind<Integer> flux = Fluxs.<Integer>monadPlus() .plus(FluxKind.widen(Flux.of()), FluxKind.widen(Flux.of(10))) .convert(FluxKind::narrowK); //Flux.of(10))
static <T> MonadPlus<ReactorWitness.flux>	monadPlus(Monoid<Higher<ReactorWitness.flux,T>> m) Monoid<FluxKind<Integer>> m = Monoid.of(FluxKind.widen(Flux.of()), (a,b)->a.isEmpty() ? b : a); FluxKind<Integer> flux = Fluxs.<Integer>monadPlus(m) .plus(FluxKind.widen(Flux.of(5)), FluxKind.widen(Flux.of(10))) .convert(FluxKind::narrowK); //Flux.of(5))
static <T> MonadPlus<ReactorWitness.flux>	monadPlusK(Monoid<FluxKind<T>> m)
static <T,R> MonadRec<ReactorWitness.flux>	monadRec()
static <T,R> MonadZero<ReactorWitness.flux>	monadZero() FluxKind<String> flux = Fluxs.unit() .unit("hello") .then(h->Fluxs.monadZero().filter((String t)->t.startsWith("he"), h)) .convert(FluxKind::narrowK); //Flux.of("hello"));
static <C2,T> Traverse<ReactorWitness.flux>	traverse()
static Unfoldable<ReactorWitness.flux>	unfoldable()
static <T> Pure<ReactorWitness.flux>	unit() FluxKind<String> flux = Fluxs.unit() .unit("hello") .convert(FluxKind::narrowK); //Flux.of("hello"))
static <T,R> Applicative<ReactorWitness.flux>	zippingApplicative() import static com.aol.cyclops.hkt.jdk.FluxKind.widen; import static com.aol.cyclops.util.function.Lambda.l1; Fluxs.zippingApplicative() .ap(widen(Flux.of(l1(this::multiplyByTwo))),widen(Flux.of(1,2,3))); //[2,4,6]

Methods inherited from class java.lang.Object

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

Constructor Detail

Instances

public Instances()

Method Detail

definitions

public static InstanceDefinitions<ReactorWitness.flux> definitions()

functor

public static <T,R> Functor<ReactorWitness.flux> functor()

Transform a flux, mulitplying every element by 2

 
  FluxKind<Integer> flux = Fluxs.functor().map(i->i*2, FluxKind.widen(Flux.of(1,2,3));

  //[2,4,6]


 
 

An example fluent api working with Fluxs

 
   FluxKind<Integer> flux = Fluxs.unit()
        .unit("hello")
        .then(h->Fluxs.functor().map((String v) ->v.length(), h))
        .convert(FluxKind::narrowK);

 
 

Returns:

A functor for Fluxs

unit

public static <T> Pure<ReactorWitness.flux> unit()

 
 FluxKind<String> flux = Fluxs.unit()
        .unit("hello")
        .convert(FluxKind::narrowK);

        //Flux.of("hello"))

 
 

Returns:

A factory for Fluxs

zippingApplicative

public static <T,R> Applicative<ReactorWitness.flux> zippingApplicative()

 
 import static com.aol.cyclops.hkt.jdk.FluxKind.widen;
 import static com.aol.cyclops.util.function.Lambda.l1;

        Fluxs.zippingApplicative()
        .ap(widen(Flux.of(l1(this::multiplyByTwo))),widen(Flux.of(1,2,3)));

 //[2,4,6]
 
 

Example fluent API

 
 FluxKind<Function<Integer,Integer>> fluxFn =Fluxs.unit()
                                                  .unit(Lambda.l1((Integer i) ->i*2))
                                                  .convert(FluxKind::narrowK);

        FluxKind<Integer> flux = Fluxs.unit()
        .unit("hello")
        .then(h->Fluxs.functor().map((String v) ->v.length(), h))
        .then(h->Fluxs.zippingApplicative().ap(fluxFn, h))
        .convert(FluxKind::narrowK);

        //Flux.of("hello".length()*2))

 
 

Returns:

A zipper for Fluxs

monad

public static <T,R> Monad<ReactorWitness.flux> monad()

 
 import static com.aol.cyclops.hkt.jdk.FluxKind.widen;
 FluxKind<Integer> flux  = Fluxs.monad()
        .flatMap(i->widen(FluxX.range(0,i)), widen(Flux.of(1,2,3)))
        .convert(FluxKind::narrowK);
 
 

Example fluent API

 
    FluxKind<Integer> flux = Fluxs.unit()
        .unit("hello")
        .then(h->Fluxs.monad().flatMap((String v) ->Fluxs.unit().unit(v.length()), h))
        .convert(FluxKind::narrowK);

        //Flux.of("hello".length())

 
 

Returns:

Type class with monad functions for Fluxs

monadZero

public static <T,R> MonadZero<ReactorWitness.flux> monadZero()

 
  FluxKind<String> flux = Fluxs.unit()
        .unit("hello")
        .then(h->Fluxs.monadZero().filter((String t)->t.startsWith("he"), h))
        .convert(FluxKind::narrowK);

        //Flux.of("hello"));

 
 

Returns:

A filterable monad (with default value)

monadRec

public static <T,R> MonadRec<ReactorWitness.flux> monadRec()

monadPlus

public static <T> MonadPlus<ReactorWitness.flux> monadPlus()

 
  FluxKind<Integer> flux = Fluxs.<Integer>monadPlus()
        .plus(FluxKind.widen(Flux.of()), FluxKind.widen(Flux.of(10)))
        .convert(FluxKind::narrowK);
        //Flux.of(10))

 
 

Returns:

Type class for combining Fluxs by concatenation

monadPlus

public static <T> MonadPlus<ReactorWitness.flux> monadPlus(Monoid<Higher<ReactorWitness.flux,T>> m)

 
  Monoid<FluxKind<Integer>> m = Monoid.of(FluxKind.widen(Flux.of()), (a,b)->a.isEmpty() ? b : a);
        FluxKind<Integer> flux = Fluxs.<Integer>monadPlus(m)
        .plus(FluxKind.widen(Flux.of(5)), FluxKind.widen(Flux.of(10)))
        .convert(FluxKind::narrowK);
        //Flux.of(5))

 
 

Parameters:

m - Monoid to use for combining Fluxs

Returns:

Type class for combining Fluxs

monadPlusK

public static <T> MonadPlus<ReactorWitness.flux> monadPlusK(Monoid<FluxKind<T>> m)

traverse

public static <C2,T> Traverse<ReactorWitness.flux> traverse()

Returns:

Type class for traversables with traverse / sequence operations

foldable

public static <T> Foldable<ReactorWitness.flux> foldable()

 
 int sum  = Fluxs.foldable()
        .foldLeft(0, (a,b)->a+b, FluxKind.widen(Flux.of(1,2,3,4)));

        //10

 
 

Returns:

Type class for folding / reduction operations

unfoldable

public static Unfoldable<ReactorWitness.flux> unfoldable()