是否存在转换java.util.function的标准方法，Consumer< T>到java.util.function.Function< T，Void> [英] Is there a standard way to convert a java.util.function,Consumer<T> into a java.util.function.Function<T, Void>

问题描述

我有消费者< T> ，我想将其转换为功能< T，Void> 。

I have a Consumer<T> that I'd like to convert into a Function<T, Void>.

我可以通过使用

public <T> Function<T, Void> consumerToFunction(Consumer<T> consumer)
{
    return x -> {
        consumer.accept(x);
        return null;
    };
}

但我怀疑这样的东西可能已经存在于JDK中或者可能已经存在公共图书馆。

But I suspect that something like that might already exist in the JDK or perhaps in a common library.

推荐答案

看起来您需要调整消费者< T> 到功能< T，R> 。您已经创建了适配器模式的一个很好的示例。

It looks like you need to adapt a Consumer<T> to a Function<T, R>. You have created a good example of the Adapter Pattern.

[T]适配器模式是一种软件设计模式，允许从另一个接口使用现有类的接口。

[T]he adapter pattern is a software design pattern that allows the interface of an existing class to be used from another interface.

您要从功能中使用消费者。

我知道功能接口之间没有JDK内置转换器，但这似乎是应用标准模式来解决问题的好方法。

I know of no JDK built-in converter between functional interfaces, but this appears to be a good way of applying a standard pattern to solve your problem.

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