Cellulose 0.1

inter-dependant values with caching and lazy evaluation.

You can think of it like a spreadsheet program – Many cells are are calculated from the values of other cells. When one cell changes, all of the dependant cells get updated with new values.

However, cellulose goes quite a ways beyond this. It guarantees that when a value is read, it is consistant with all the values it depends on. It also is lazy (read: efficient.) Calculating a value is put off till the very last possible moment, and only recalculated when absolutely needed.

Dependency discovery and cache invalidation are fully transparent and automatic. This greatly reduces a major source of bugs in software.

A goal of the project is to be as simple as possible, (but no simpler,) so that anyone wanting to seriously use it could easily understand the internals.