Groovy变量作用域
Groovy变量作用域有两个，要想成为全局作用域，需要用@Field标示
import groovy.transform.Field
@Field File configFile
@Field final KEY_CONFIG_NAME = 'pitaya_component.config'
@Field final KEY_MAIN_HOST = 'mainHost'
@Field final KEY_SUB_HOST = 'subHost'
configFile = new File(getRootDir(), KEY_CONFIG_NAME)
if (configFile.exists()) {
configFile.delete()
}
void mainHostInclude(String[] projectPaths) {
include(projectPaths)
projectPaths.each { projectName ->
configFile.append(KEY_MAIN_HOST + projectName + "\n")
}
}
mainHostInclude ':app'
Groovy 语法each中用return
private boolean isNotHost2(String projectName) {
mComponentConfigMap.values().forEach({ contentList ->
contentList.forEach({ line ->
System.out.println(line + " is " + false)
return false
})
})
System.out.println(projectName + " is " + true)
return true
}
输入结果
subHost:setting is false
subHost:printer is false
mainHost:app is false
setting is true
不合常理，return了，咱么for循环还在继续。我看看如下forEach的源码，原理闭包是一个Consumer类，在Consumer类中的方法调用return，只是退出了Consumer。外层for没有退出。那我们该如何整体退出呢？
自己改写为 for方式
default void forEach(Consumer<? super T> action) {
Objects.requireNonNull(action);
for (T t : this) {
action.accept(t);
}
}
``