小编Pra*_*h B的帖子

我有一个名为CustomerInfoModule的功能模块,它导出一个CustomerInfoComponent.见下文.

import {NgModule} from '@angular/core'
import {RouterModule}  from '@angular/router'

import {CustomerInfoComponent} from './customer-info.component'

@NgModule({
declarations:[CustomerInfoComponent],
exports:[CustomerInfoComponent]
})
export class CustomerInfoModule{
}

我想在MissedCollectionsComponent中导入和使用此CustomerInfoComponent.我收到打字稿错误

'.module''没有导出的成员'CustomerInfoComponent'

.

import {NgModule} from '@angular/core'
import {RouterModule} from '@angular/router'

import {MissedCollectionsComponent} from './missed-collections.component'

import {CustomerInfoComponent} from '../shared/customer/customer-info.module'

@NgModule({
imports:[RouterModule.forChild([
        {path:'missedcollection',component:MissedCollectionsComponent},
        {path:'missedcollection/customerinfo',component:CustomerInfoComponent}
    ]),
    CustomerInfoModule],
declarations:[],
exports:[]
})
export class MissedCollectionsModule{

}

根据Angular2文档,它说:

"我们导出ContactComponent,以便导入ContactModule的其他模块可以将其包含在组件模板中." 链接

从模块导入组件并在另一个模块中使用它是不合逻辑的.我错误地认为/或缺少某些东西？

我是多线程新手,在阅读多线程时,想到编写这个花哨的多线程代码来执行以下操作.

我的柜台课程如下.

class Counter {
  private int c = 0;

  public void increment() {
    System.out.println("increment value: "+c);
      c++;
  }

  public void decrement() {
      c--;
      System.out.println("decrement value: "+c);
  }

  public int value() {
      return c;
  }

}

此Counter对象在两个线程之间共享.一旦线程启动,我需要执行以下操作.我希望Thread2等到Thread1将Counter对象的计数递增1.一旦完成,然后线程1通知thread2然后Thread1开始等待thread2将值递减1.然后thread2启动并递减值1和再次通知thread1然后thread2开始等待thread1.重复此过程几次.

我怎样才能做到这一点.提前谢谢了.

我做了以下事情.

public class ConcurrencyExample {

  private static Counter counter;
  private static DecrementCount t1;
  private static IncrementCount t2;

  public static void main(String[] args) {
    Counter counter = new Counter();
    Thread t1 = new Thread(new IncrementCount(counter));
    t1.start();

    Thread t2 = new Thread(new DecrementCount(counter));
    t2.start(); …