cells

a spreadsheet app with lisp-like formulas

cells_preview.mp4

todo

Basic Functionalities

• basic formulas

  • arithmetic operations
  • aggregation functions (e.g., sum, mean, etc.)
  • custom functions

• data types

  • number
  • text
  • boolean
  • date

• data validation

Functionalities for User Interaction

• cell formatting

  • text alignment (left, centre, right)
  • font size
  • font style (bold, italic, underline, strikethrough)
  • cell background color

• general functionalities

  • copy + paste
  • undo + redo
  • select a range using mouse
  • select cells individually using ctrl
  • select cells range with shift

Advanced Features

• circular dependency/cycle detection
• helpful error messages
• charts
• multiple sheets
• persist and load
• load from CSV/TSV, etc.
• load from JSON

User Interface and Experience

• minimal user interface
  • double shift to open a menu to do things like load, save, switch sheets etc.