numberOfRows(in:)

Declaration

@MainActor optional func numberOfRows(in tableView: NSTableView) -> Int

Parameters

• tableView:

  The table view that sent the message.

Return Value

The number of rows in aTableView.

Discussion

An instance of NSTableView uses this method to determine how many rows it should create and display. Your numberOfRows(in:) implementation is called very frequently, so it must be efficient.

Both view-based table views and cell-based table views must implement this method.

See Also

Related Documentation

• Table View Programming Guide for Mac

Getting Values

• tableView(_:objectValueFor:row:)