zeroshade commented on issue #10972: URL: https://github.com/apache/arrow/issues/10972#issuecomment-905161847
Hey @bidhan-a in order to get the actual value at a given index you need to cast the Interface to the correct type which will provide the type-safe access methods. One example would be to do a type-switch on the actual `Interface` type such as in the integration testing code here: https://github.com/apache/arrow/blob/master/go/arrow/internal/arrjson/arrjson.go#L925 Alternately you could switch on the type id: ```go func val(col array.Interface, idx int) interface{} { switch col.DataType().ID() { case arrow.INT32: return col.(*array.Int32).Value(idx) case arrow.STRING: return col.(*array.String).Value(idx) // and so on..... } ``` Either way, in order to get the value at a given index, you need to know which underlying array type you actually have, and all of the types have accessors to retrieve the values at indexes once you've type-asserted them to the proper type. Hope that helps! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
