java 什么都不做的 Lambda
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/30108450/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Lambda that does absolutely nothing
提问by Rien
I needed to have a lambda expression of the functional interface Runnablethat did nothing. I used to have a method
我需要一个Runnable什么都不做的函数式接口的 lambda 表达式。我以前有个方法
private void doNothing(){
//Do nothing
}
and then use this::doNothing. But I've found an even shorter way to do this.
然后使用this::doNothing. 但我找到了一种更短的方法来做到这一点。
回答by Eddú Meléndez
For Runnable interface you should have something like that:
对于 Runnable 接口，你应该有这样的东西：
Runnable runnable = () -> {};
Where:
在哪里：
()because run method doesn't receive args{}body of run method which in this case is empty
()因为 run 方法不接收参数{}run 方法的主体，在这种情况下为空
After that, you can call the method
之后，您可以调用该方法
runnable.run();
回答by Rien
The lambda expression I use now is:
我现在使用的 lambda 表达式是：
() -> {}
