Package one.xingyi.core.utils

Class Optionals

java.lang.Object

one.xingyi.core.utils.Optionals

public class Optionals
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
Optionals()

Method Summary

Modifier and Type	Method	Description
static <T> void	doit(java.util.Optional<T> opt, java.lang.Runnable notIn, java.util.function.Consumer<T> in)
static <T,T1> java.util.List<T1>	flatMap(java.util.Optional<T> optT, java.util.function.Function<T,java.util.List<T1>> fn)
static <T,T1> java.util.List<T1>	flatMapif(java.util.Optional<T> optT, boolean b, java.util.function.Function<T,java.util.List<T1>> fn)
static <T> java.util.concurrent.CompletableFuture<java.util.Optional<T>>	flip(java.util.Optional<java.util.concurrent.CompletableFuture<T>> opt)
static <T,T1> T1	fold(java.util.Optional<T> opt, java.util.function.Supplier<T1> notIn, java.util.function.Function<T,T1> in)
static <T> java.util.Optional<T>	from(boolean b, java.util.function.Supplier<T> supplier)
static <T> java.util.Optional<T>	from(boolean b, T t)
static <T1,T2,T> java.util.Optional<T>	join(java.util.Optional<T1> op1, java.util.Optional<T2> op2, java.util.function.BiFunction<T1,T2,T> fn)
static <T,T1> java.util.List<T1>	toList(java.util.Optional<T> optT, java.util.function.Function<T,T1> fn)

Methods inherited from class java.lang.Object

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

Constructor Detail

Optionals

public Optionals()

Method Detail

toList

public static <T,T1> java.util.List<T1> toList(java.util.Optional<T> optT,
                                                     java.util.function.Function<T,T1> fn)

flatMap

public static <T,T1> java.util.List<T1> flatMap(java.util.Optional<T> optT,
                                                      java.util.function.Function<T,java.util.List<T1>> fn)

flatMapif

public static <T,T1> java.util.List<T1> flatMapif(java.util.Optional<T> optT,
                                                        boolean b,
                                                        java.util.function.Function<T,java.util.List<T1>> fn)

fold

public static <T,T1> T1 fold(java.util.Optional<T> opt,
                                   java.util.function.Supplier<T1> notIn,
                                   java.util.function.Function<T,T1> in)

doit

public static <T> void doit(java.util.Optional<T> opt,
                            java.lang.Runnable notIn,
                            java.util.function.Consumer<T> in)

join

public static <T1,T2,T> java.util.Optional<T> join(java.util.Optional<T1> op1,
                                                               java.util.Optional<T2> op2,
                                                               java.util.function.BiFunction<T1,T2,T> fn)

flip

public static <T> java.util.concurrent.CompletableFuture<java.util.Optional<T>> flip(java.util.Optional<java.util.concurrent.CompletableFuture<T>> opt)

from

public static <T> java.util.Optional<T> from(boolean b,
                                             java.util.function.Supplier<T> supplier)

from

public static <T> java.util.Optional<T> from(boolean b,
                                             T t)