我有两个列的dataframe:
add one new column with the following value: "some url" + the value of the dataframe's id column val k = df2.count().asInstanceOf[Int]
/
\google.golang.org\grpc\internal\transport\http_util.go:270:23: cannot use hf (type "vendor/golang.org/x/net/http2/hpack".HeaderField) as type
"golang.org/x/net/http2/hpack".HeaderF