This is a small non-graphical (non-serious) spreadsheet implementation, which works on CSV files. It supports cell dependencies, formulas which consider precedence rules and brackets, and can catch circular references.
Formula evaluation is done via Shunting Yard algorithm, which converts infix notation to postfix and is then evaluated by a simple stack machine.
The following is an example of a CSV file which can be loaded by the program. Rows are described by letters and columns by numbers.
| A | B | C | D | E |
|---|---|---|---|---|
| 34 | =A2 | "" | ||
| =B2*2 | 45 | =3+A2*2 | "" | |
| =C4 | =D4 | 55 | ||
| string | =A3 | =(C3+A2)*3 |