我正在学习一个教程:
System.InvalidOperationException``2.Select[R](Func``3 f) in c:\Tomas\Public\Deedle\src\Deedle\Series.fs:riga 352 in Deedle.Series`TestTutorial01.fsx:riga 49 Stopped due to error
我试图找出
#1 CUST#2 AAPL 200 400 94我想聚合列-( at Deedle.VectorHelpers.get_AtMostOne@161-1.Invoke(Tuple2 tupledArg) in c:\Tomas\Public\Deedle\src\Deedle\Vectors\VectorHelpers.fs:line 162 at