代码示例：

val sample_data_combine_result=List((0,(List(FitModel(4022,1447.92,-8.38983306721434,2.0)),1)),(1,(List(FitModel(1083,389.88,-11.057139857142857,3.0)),1)),(2,(List(FitModel(4022,1447.92,-8.38983306721434,2.0)),1)))scala> val fitResult = sample_data_combine_result.flatMap(s => {     |       var fitResultItems: ListBuffer[FitModelWithSceneType] = null     |       if(s._1==0){     |         fitResultItems=ListBuffer(     |           FitModelWithSceneType(0,1,3.0,-3.9110667661835516,0.6989700043360189),     |           FitModelWithSceneType(0,51,3.0,-3.9110667661835516,1.1760912590556813)     |         )     |       }     |       if(s._1==1){     |         fitResultItems=ListBuffer(     |           FitModelWithSceneType(1,1,3.0,-3.9110667661835516,0.6989700043360189),     |           FitModelWithSceneType(1,51,3.0,-3.9110667661835516,1.1760912590556813),     |           FitModelWithSceneType(1,101,3.0,-3.9110667661835516,1.3979400086720377)     |         )     |       }     |       if(s._1==2){     |         fitResultItems=ListBuffer(     |           FitModelWithSceneType(2,1,3.0,-3.9110667661835516,0.6989700043360189),     |           FitModelWithSceneType(2,51,3.0,-3.9110667661835516,1.1760912590556813),     |           FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377),     |           FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377),     |           FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377)     |         )     |       }     |      |       fitResultItems     |     })fitResult: List[FitModelWithSceneType] = List(FitModelWithSceneType(0,1,3.0,-3.9110667661835516,0.6989700043360189), FitModelWithSceneType(0,51,3.0,-3.9110667661835516,1.1760912590556813), FitModelWithSceneType(1,1,3.0,-3.9110667661835516,0.6989700043360189), FitModelWithSceneType(1,51,3.0,-3.9110667661835516,1.1760912590556813), FitModelWithSceneType(1,101,3.0,-3.9110667661835516,1.3979400086720377), FitModelWithSceneType(2,1,3.0,-3.9110667661835516,0.6989700043360189), FitModelWithSceneType(2,51,3.0,-3.9110667661835516,1.1760912590556813), FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377), FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377), FitModelWithSceneType(2,101,3.0,-3.9110667661835516,1.3979400086720377))