com.aol.cyclops.hkt.instances

Class General.SupplierMonadZero<CRE,A,B>

java.lang.Object

com.aol.cyclops.hkt.instances.General.SupplierMonadZero<CRE,A,B>

All Implemented Interfaces:

Filterable<CRE>, Functor<CRE>, Applicative<CRE>, Monad<CRE>, MonadZero<CRE>, Unit<CRE>

Enclosing interface:

General

public static class General.SupplierMonadZero<CRE,A,B>
extends java.lang.Object
implements MonadZero<CRE>

Constructor Summary

Constructors

Constructor and Description
SupplierMonadZero()

Method Summary

Modifier and Type	Method and Description
<T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R>	ap(com.aol.cyclops.hkt.alias.Higher<CRE,java.util.function.Function<T,R>> fn, com.aol.cyclops.hkt.alias.Higher<CRE,T> apply)
<T> com.aol.cyclops.hkt.alias.Higher<CRE,T>	filter(java.util.function.Predicate<? super T> predicate, com.aol.cyclops.hkt.alias.Higher<CRE,T> ds)
<T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R>	flatMap(java.util.function.Function<? super T,? extends com.aol.cyclops.hkt.alias.Higher<CRE,R>> fn, com.aol.cyclops.hkt.alias.Higher<CRE,T> ds)
<T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R>	map(java.util.function.Function<? super T,? extends R> fn, com.aol.cyclops.hkt.alias.Higher<CRE,T> ds) Transform the supplied data structure using the supplied transformation function
<T> com.aol.cyclops.hkt.alias.Higher<CRE,T>	unit(T value) Create a new instance of the core type (e.g.
com.aol.cyclops.hkt.alias.Higher<CRE,?>	zero() e.g.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.aol.cyclops.hkt.typeclasses.monad.MonadZero

narrowZero

Methods inherited from interface com.aol.cyclops.hkt.typeclasses.monad.Monad

flatten, mapM, replicate, sequence, traverse

Methods inherited from interface com.aol.cyclops.hkt.typeclasses.monad.Applicative

ap2, ap3, apBiFn, curry2, narrow, narrow2, narrow3, narrowBiFn

Methods inherited from interface com.aol.cyclops.hkt.typeclasses.functor.Functor

lift, mapRev, peek

Constructor Detail

SupplierMonadZero

public SupplierMonadZero()

Method Detail

zero

public com.aol.cyclops.hkt.alias.Higher<CRE,?> zero()

Description copied from interface: MonadZero

e.g. for Optional we can use Optional.empty()

Specified by:

zero in interface MonadZero<CRE>

Returns:

Identity value or zero value for the HKT type, the generic type is unknown

flatMap

public <T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R> flatMap(java.util.function.Function<? super T,? extends com.aol.cyclops.hkt.alias.Higher<CRE,R>> fn,
                                                             com.aol.cyclops.hkt.alias.Higher<CRE,T> ds)

Specified by:

flatMap in interface Monad<CRE>

ap

public <T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R> ap(com.aol.cyclops.hkt.alias.Higher<CRE,java.util.function.Function<T,R>> fn,
                                                        com.aol.cyclops.hkt.alias.Higher<CRE,T> apply)

Specified by:

ap in interface Applicative<CRE>

map

public <T,R> com.aol.cyclops.hkt.alias.Higher<CRE,R> map(java.util.function.Function<? super T,? extends R> fn,
                                                         com.aol.cyclops.hkt.alias.Higher<CRE,T> ds)

Description copied from interface: Functor

Transform the supplied data structure using the supplied transformation function

  
  ListX<Integer> listx = ListX.of(1,2,3);
        ListType<Integer> mapped1 =Lists.functor().map(a->a+1, ListType.widen(listx));
        mapped1.add(1);
        ListX<Integer> listxMapped = mapped1.list();
 
 

Specified by:

map in interface Functor<CRE>

Parameters:

fn - Transformation function

ds - Datastructure to transform

Returns:

unit

public <T> com.aol.cyclops.hkt.alias.Higher<CRE,T> unit(T value)

Description copied from interface: Unit

Create a new instance of the core type (e.g. a List or CompletableFuture) that is HKT encoded

Specified by:

unit in interface Unit<CRE>

Parameters:

value - To populate new instance of

Returns:

HKT encoded new instance with supplied value

filter

public <T> com.aol.cyclops.hkt.alias.Higher<CRE,T> filter(java.util.function.Predicate<? super T> predicate,
                                                          com.aol.cyclops.hkt.alias.Higher<CRE,T> ds)

Specified by:

filter in interface Filterable<CRE>

Specified by:

filter in interface MonadZero<CRE>