还有2种方法如下:
update!(t, "feature_" + string(1001 .. 1030), loop(x->float(), 1..30)) update!(t, "feature_" + string(2001 .. 2030), loop(x->float(), 1..30)) t["feature_" + string(1001 .. 1030)]=loop(x->float(), 1..30) t["feature_" + string(2001 .. 2030)]=loop(x->float(), 1..30)