maybe u can try to use csv reader to load a csvfile and then use empty() function to see whether the return value is 0 or not
it appears to me that the result is always 0
----n_rows() returns the number of rows that have been read so far,but if you do not use the read_row() function,the _n_rows is always 0
maybe u can try to use csv reader to load a csvfile and then use empty() function to see whether the return value is 0 or not it appears to me that the result is always 0 ----n_rows() returns the number of rows that have been read so far,but if you do not use the read_row() function,the _n_rows is always 0