The cell’s formatter object.
- macOS 10.0+
A formatter handles the translation of the receiver’s contents between its onscreen representation and its object value. Cells use a formatter object to format the textual representation of their object value and to validate cell input and convert that input to an object value. When assigning a new formatter to a cell, the formatter attempts to interpret the cell’s current value. If it cannot do so, the formatter converts the current value to a string object.