Package one.xingyi.fp

Interface IPartialFunction<From,To>

All Superinterfaces:

Function<From,To>

public interface IPartialFunction<From,To>
extends Function<From,To>

Method Summary

Modifier and Type	Method	Description
static <From, To> IPartialFunction<From,To>	always(Function<From,To> fn)
static <From, To> To	applyOr(IPartialFunction<From,To> pfn, Supplier<To> defValue, From from)
static <From, To> To	applyOrError(IPartialFunction<From,To> pfn, From from)
static <From, To> Function<From,To>	chain(To defValue, Collection<IPartialFunction<From,To>> fns)
static <From, To> IPartialFunction<From,To>	chainToPf(Collection<IPartialFunction<From,To>> pfs)
boolean	isDefinedAt(From from)
static <From, To> Function<From,List<To>>	mapFn(Collection<IPartialFunction<From,To>> fns)
static <From, To, Result> Function<From,Result>	mapReduceFn(Collection<IPartialFunction<From,To>> fns, Function<List<To>,Result> reduceFn)
static <From, To> IPartialFunction<From,To>	notNull(Function<From,To> fn)
static <From, To> IPartialFunction<From,To>	of(Predicate<From> isDefinedAt, Function<From,To> fn)

Methods inherited from interface java.util.function.Function

andThen, apply, compose

Method Details

isDefinedAt

boolean isDefinedAt(From from)

always

static <From,
To> IPartialFunction<From,To> always(Function<From,To> fn)

applyOrError

static <From,
To> To applyOrError(IPartialFunction<From,To> pfn,
 From from)

applyOr

static <From,
To> To applyOr(IPartialFunction<From,To> pfn,
 Supplier<To> defValue,
 From from)

of

static <From,
To> IPartialFunction<From,To> of(Predicate<From> isDefinedAt,
 Function<From,To> fn)

notNull

static <From,
To> IPartialFunction<From,To> notNull(Function<From,To> fn)

mapFn

static <From,
To> Function<From,List<To>> mapFn(Collection<IPartialFunction<From,To>> fns)

mapReduceFn

static <From,
To,
Result> Function<From,Result> mapReduceFn(Collection<IPartialFunction<From,To>> fns,
 Function<List<To>,Result> reduceFn)

chain

static <From,
To> Function<From,To> chain(To defValue,
 Collection<IPartialFunction<From,To>> fns)

chainToPf

static <From,
To> IPartialFunction<From,To> chainToPf(Collection<IPartialFunction<From,To>> pfs)