Java
Async/await is a powerful feature in JavaScript that simplifies working with asynchronous code. It builds on top of Promises and provides a more intuitive way to handle asynchronous operations.
What is Async/Await?
Async/await is syntactic sugar for Promises. It allows you to write asynchronous code that looks and behaves like synchronous code, making it easier to read and understand.
How to Use Async/Await
Here's a basic example of how to use async/await:
高效绘制流程图
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
高效绘制序列图
sequenceDiagram
participant Alice
participant Bob
Alice->John: Hello John, how are you?
loop Healthcheck
John->John: Fight against hypochondria
end
Note right of John: Rational thoughts
prevail... John-->Alice: Great! John->Bob: How about you? Bob-->John: Jolly good!
prevail... John-->Alice: Great! John->Bob: How about you? Bob-->John: Jolly good!
高效绘制甘特图
甘特图内在思想简单。基本是一条线条图,横轴表示时间,纵轴表示活动(项目),线条表示在整个期间上计划和实际的活动完成情况。它直观地表明任务计划在什么时候进行,及实际进展与计划要求的对比。
gantt
title 项目开发流程
section 项目确定
需求分析 :a1, 2019-06-22, 3d
可行性报告 :after a1, 5d
概念验证 : 5d
section 项目实施
概要设计 :2019-07-05 , 5d
详细设计 :2019-07-08, 10d
编码 :2019-07-15, 10d
测试 :2019-07-22, 5d
section 发布验收
发布: 2d
验收: 3d