TypeScript 编译错误无法调用类型缺少调用签名的表达式
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TypeScript Compile Error Cannot invoke an expression whose type lacks a call signature
提问by Synoon
the code below get me by transpiling it with gulp this error:
下面的代码通过使用 gulp 这个错误来转译它来得到我：
[tsc] > C:/Workarea/MyFirstAngular/src/enum/msg.ts(35,33): error TS2349: Cannot invoke an expression whose type lacks a call signature. Failed to compile TypeScript: Error: tsc command has exited with code:2
[tsc] > C:/Workarea/MyFirstAngular/src/enum/msg.ts(35,33)：错误 TS2349：无法调用类型缺少调用签名的表达式。无法编译 TypeScript：错误：tsc 命令已退出，代码为：2
module MessageUtil {
enum Morning {
"Good Morning",
"Great to see you!",
"Good day.",
"Lovely day today, isn't it?",
"What's up?",
"Nice to meet you",
}
}
export class MessageData {
private getRandomElementOfEnum(e : any):string{
var length:number = Object.keys(e).length(); //<-- This is Line 35
return e[Math.floor((Math.random() * length)+1)];
}
public getRandMorning():string {
return this.getRandomElementOfEnum(Morning);
}
}
}
Does anybody know what's my exact fault?
有谁知道我的确切错误是什么？
My Setup: -IDEA 14 -Node.js -Gulp -gulp-tsc -gulp-connect (for Livereload)
我的设置：-IDEA 14 -Node.js -Gulp -gulp-tsc -gulp-connect（用于 Livereload）
回答by Synoon
Guys who have same error message --> Check your Code-Syntax
有同样错误信息的人 --> 检查你的代码语法
Found my fault. This is notJava.
发现我的错。这不是Java。
private getRandomElementOfEnum(e : any):string{ var length:number = Object.keys(e).length(); //<-- This is Line 35 return e[Math.floor((Math.random() * length)+1)]; }
private getRandomElementOfEnum(e : any):string{ var length:number = Object.keys(e).length(); //<-- This is Line 35 return e[Math.floor((Math.random() * length)+1)]; }
Should be:
应该：
private getRandomElementOfEnum(e : any):string{
var length:number = Object.keys(e).length; // <--- WITHOUT ()
return e[Math.floor((Math.random() * length)+1)];
}
