typescript getter 2fsetter best practice

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Maryam
25 Jun 2017
1// An example of getter and setter
2class myClass {
3	private _x: number;
4  
5  	get x() {
6    	return this._x;
7    }
8  
9 	// in this example we'll try to set _x to only numbers higher than 0
10  	set x(value) {
11    	if(value <= 0)
12          throw new Error('Value cannot be less than 0.');
13      	this._x = value;
14    }
15}
16let test = new myClass();
17test.x = -1; // You'll be getting an error
Giacomo
21 Jan 2016
1interface IPerson {
2  fullname: string
3  age: number
4}
5
6class Person {
7  
8 private fullname:string;
9 private age:number;
10
11 constructor({...options}: IPerson ) {
12  this.fullname = 'jane doe'
13  this.age = 30
14  this.set(options)
15 }
16
17 get(): IPerson {
18   const data = {
19     fullname: this.fullname,
20     age: this.age
21   }
22   return data
23 }
24
25 set<T extends IPerson>({...options}: T): void {
26   this.fullname = options.fullname
27   this.age = options.age
28 }
29
30}
31
32const data = new Person({
33  fullname: 'john doe',
34  age:28
35})
36
37console.log(data.get())
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