英文:
Readonly preseted values in Angular
问题
I'm new to Angular and TypeScript and in the process of mastering those, I run upon a task where I need an object (or something alike) which gives me the opportunity to define an attribute which is readable but not editable.
In Java I would have done it like this
public class Dto {private id: number;private desc: string;constructor(desc: string){this.desc = desc;this.id = Generator.getRandomId();}// Getter for both// Setter for desc}
Is there any way to do something similar in TypeScript?
I was told to do this with an Interface but by this time, I'm quite overasked.
Thanks!
英文:
I'm new to Angular and TypeScript and in the process of mastering those, I run upon a task where I need an object (or something alike) which gives me the opportunity to define an attribute which is readable but not editable.
In Java I would have done it like this
public class Dto {private long id;private String desc;public Dto(String desc){this.desc = desc;id= Generator.getRandomId();}//Getter for both// Setter for desc}
Is there any way to do something similar in TypeScript?
I was told to do this with an Interface but by this time, I'm quite overasked.
Thanks!
答案1
得分: 1
在TypeScript中几乎是相同的：
class Dto {private readonly id: number;private desc: string;constructor(desc: string) {this.desc = desc;this.id = Generator.getRandomId();}}
或者使用接口：
interface Foo {readonly id: string;desc: string;}declare const foo: Foo;foo.id = ''; // 错误
英文:
It's pretty much the same in TS :
class Dto {private readonly id: number;private desc: string;public Dto(desc: string) {this.desc = desc;this.id = Generator.getRandomId();}}
or with an interface :
interface Foo {readonly id: string;desc: string;}declare const foo: Foo;foo.id = '' // Error
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