@@

  async compair_phone_book(){
 
  let test_set=[];//先塞PROMISE給ALL用
  let setting=[];
  let a;

    return new Promise((resolve,reject)=>{
      this.get_phone_book().then(res=>{
        const b =JSON.parse(JSON.stringify(res));
         b.map(i=>{
          test_set.push(new Promise((resolve,reject)=>{
            this.http.get("url/contact="+i).subscribe(res=>{
              resolve(res) 
            })
          }))
        })
        resolve(test_set)//爬到的是json array
      })
       
    })
    
    
      this.compair_phone_book().then(res=>{
                console.log(res)
                //[T,T,T,T] 無法放到promise.all()
              })