Package fj.data

Class Writer<W,A>

java.lang.Object

fj.data.Writer<W,A>

public final class Writer<W,A>
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
private W	logValue
private Monoid<W>	monoid
private A	val

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Writer(A a, W w, Monoid<W> m)

Method Summary

Modifier and Type	Method	Description
<B> Writer<W,B>	flatMap(F<A,Writer<W,B>> f)
W	log()
<B> Writer<W,B>	map(F<A,B> f)
Monoid<W>	monoid()
P2<W,A>	run()
static <A> F<A,Writer<java.lang.String,A>>	stringLogger()
Writer<W,A>	tell(W w)
static <W,A> Writer<W,A>	unit(A a, Monoid<W> m)
static <W,A> Writer<W,A>	unit(A a, W w, Monoid<W> m)
static <B> Writer<java.lang.String,B>	unit(B b)
A	value()

Methods inherited from class java.lang.Object

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

Field Detail

val

private final A val

logValue

private final W logValue

monoid

private final Monoid<W> monoid

Constructor Detail

Writer

private Writer(A a,
               W w,
               Monoid<W> m)

Method Detail

run

public P2<W,A> run()

value

public A value()

log

public W log()

monoid

public Monoid<W> monoid()

unit

public static <W,A> Writer<W,A> unit(A a,
                                                 W w,
                                                 Monoid<W> m)

unit

public static <W,A> Writer<W,A> unit(A a,
                                                 Monoid<W> m)

tell

public Writer<W,A> tell(W w)

map

public <B> Writer<W,B> map(F<A,B> f)

flatMap

public <B> Writer<W,B> flatMap(F<A,Writer<W,B>> f)

unit

public static <B> Writer<java.lang.String,B> unit(B b)

stringLogger

public static <A> F<A,Writer<java.lang.String,A>> stringLogger()