HarmonyOS 方法重载

可以使用可选参数实现重载效果

export class Test {
  private name: string = '';
  private age: number;

  constructor(name?: string, age: number = 18) {
    if (name) {
      this.name = name;
    }
    this.age = age
  }

  getAge(): number {
    return this.age
  }

  getName() {
    return this.name
  }

  hasSkill(skills?: Array<string>|string) {
    let skillsMsg = ''
    if (skills) {
      if(typeof skills== 'string'){
        skillsMsg=skillsMsg
      }else{
        skills.forEach(s => {
          skillsMsg += '、' + s;
        })
      }
    }
    return '用有的技能为：阅读' + skillsMsg
  }
}

调用示例：

let t1 = new Test()
let t2 = new Test('t2Name')
let t3 = new Test('t3Name', 100)

hilog.info(0x00000, TAG, 't1# name:%{public}s , age: %{public}d, 能力有:%{public}s', t1.getName(), t1.getAge(), t1.hasSkill());
hilog.info(0x00000, TAG, 't2# name:%{public}s , age: %{public}d, 能力有:%{public}s', t2.getName(), t2.getAge(), t2.hasSkill('算数'));
hilog.info(0x00000, TAG, 't3# name:%{public}s , age: %{public}d, 能力有:%{public}s', t3.getName(), t3.getAge(), t3.hasSkill(['唱歌', '跳舞']));

更多参见：

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/1_4_u5b66_u4e60arkts_u8bed_u8a00-V5