什么是运算符 <<(双小于)在 gradle 中? [英] What's the operator << (double less than) in gradle?

问题描述

以下代码定义了 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<<操作员?它在 groovy 中有什么作用?

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

推荐答案

基本上这是一个 leftShift 操作符 - 你可以找到更多细节 此处.

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

在 gradle <<< 操作符用于将 action 添加到特定的 task.任务由在任务执行期间运行的多个操作(按添加顺序)组成.<< 只是将一个动作添加到任务的动作集合中.可以在此处找到有关任务和操作的更多信息.

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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