C++ Reactive Programming

The spreadsheet Library — a change-propagation engine

An electronic spreadsheet is often touted as the quintessential example of a reactive system. In a spreadsheet, a page is organized as a matrix of cells. When there is a  change in  a cell, all dependent cells will be re-computed to reflect the change. This happens for every cell. In effect, modelling a spreadsheet is easy, if you have a library such as Streamulus. Fortunately, the designer of the library itself wrote another library that relies on Streamulus for change propagation.

Spreadsheet is a C++ library that enables spreadsheet-programming, that is, setting up variables (cells) where each cell is assigned an expression that can contain the values of other cells. Changes are propagated ...