01前端/TS - exclamation mark operator 更新时间:2020-11-11 04:27 创建时间:2020-11-11 04:27 foo!.bar 告诉 TS 编译器 foo 不为 null 或 undefined tslint - In Typescript, what is the ! (exclamation mark / bang) operator when dereferencing a member? - Stack Overflow TypeScript: Handbook - TypeScript 2.0 上一篇 01前端/JS - report errors 下一篇 05实用技术/Bash - show white space