什么是运营商<< （小于2）在gradle中？ [英] What's the operator << (double less than) in gradle?

问题描述

下面这段代码定义了4个gradle任务：

The following piece of code defines 4 gradle tasks:

4.times { counter ->
    task "task$counter" << {
        println "I'm task number $counter"
    }
}

但是什么是<<运营商？它在groovy中做了什么？

But what is the << operator? What does it do in groovy?

推荐答案

基本上这是一个 leftShift 运营商 - 您可以在此处找到更多详细信息。

Basically this is a leftShift operator - You can find more details here.

在gradle << 运算符用于将 action 添加到特定的任务。任务由执行任务期间运行的多个操作（按顺序添加）组成。 << 只是将操作添加到任务操作集合中。有关任务和操作的更多信息，请参见此处。

In gradle << operator is used to add action to a particular task. A task consists of multiple actions that are run (in order they were added) during the execution of the task. << just adds an action to tasks collection of actions. More about tasks and actions can be found here.

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