Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Post an Article
Welcome To Ask or Share your Answers For Others

Categories

Ts 中这两种类型申明有什么区别，除了报错以外

0 votes
3.1k views
in Technique[技术] by (71.8m points)

Ts 中这两种类型申明有什么区别，除了报错以外

image.png


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
  1. 强制类型转换 强制将空对象转换为A类型
    但若对象不为空。拥有非a,b属性，也还是会报错。【报错转换类型失败】
  2. 直接规范类型

与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界，一个免费开放的程序员编程交流平台！开放，进步，分享！让技术改变生活，让极客改变未来！ Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

Just Browsing Browsing

1.4m articles

1.4m replys

5 comments

57.0k users

Most popular tags

Snow Theme by Q2A Market
Powered by Question2Answer
...