如何初始化類的靜態屬性

Question

這是我的代碼，我通過初始化數組或用戶來模擬User對象，然後定義它的操作。

import IUser = require("../interfaces/IUser"); 

export class User implements IUser { 

    private static users: User[] = []; 

    constructor(public name: string) { 

     this.name = name;   
     User.users.push(this); 
    } 

    private static init() 
    { 
     //creating some users   
     new User(/****/); 
     new User(/****/); 
     ... 
    } 

    public static findOne(login: any, next:Function) { 
     //finding user in users array 
    } 

    public static doSomethingelse(login: any, next:Function) { 
     //doSomethingelse with users array 
    } 
} 

基本上做findOne(..)doSomethingelse()之前，我需要users被創建，我不想做這樣的事情：

public static findOne(login: any, next:Function) { 
      User.init(); 
      //finding user in users array 
     } 

     public static doSomethingelse(login: any, next:Function) { 
      User.init(); 
      //doSomethingelse with users array 
     } 

有沒有更好的辦法？

Answer 1

你可以做這樣的事情：

export class User implements IUser { 
    private static users = User.initUsers(); 

    constructor(public name: string) { 

     this.name = name;   
     User.users.push(this); 
    } 

    private static initUsers() 
    { 
     User.users = []; 
     new User(...); 
     return User.users; 
    } 
}