這樣

get_data(){ 
    let irislist_copy:Array<any>;
    let irislist_recopy:Array<any>=[];
    irislist_copy=this.dp.get_array();
    
    irislist_copy.map((currentValue,index)=>{
         return new Promise((resolve,reject)=>{
            return this.htttp.get("http://"+irislist_copy[index].No_IP+"/cgi-bin/iris.cgi?name=").subscribe(res=>{
                irislist_recopy.push({No_IP:irislist_copy[index].No_IP,
                                      title:res["name"]+"Q",
                                      room: res["room"]+"Q",
                                      room_idx:irislist_copy[index].room_idx
                });   
                console.log("irislist_recopy "+JSON.stringify(irislist_recopy))
                resolve(irislist_recopy) 
              })
          });
    })
   return irislist_recopy;