this
提交,有3种方法限制返回的单元格数:
// LatestNFilter returns a filter that matches the most recent N cells in each column.
// CellsPerRowOffsetFilter returns a filter that skips the first N cells of each row, matching all subsequent cells.
// CellsPerRowLimitFilter returns a filter that matches only the first N cells of each row.
LatestNFilter
已经有一段时间了,但另外两个是新的。