un-nested callback

un-nested

// callback-nested 
Database.connect("db",function(db){
  db.open("table",function(table){
      table.select("name",function(val){
          console.log(val);
      });
  });
});

// un-nested
Function.run(
    function(){
        Database.connect("db", this.callback);
    },

    function(db){
        db.open("table", this.callback);
    },

    function(table){
        table.select("sql", this.callback);
    },

    function(val){
        console.log(val);
    }
)();