Recalculation

To determine the right order of calculations Fore uses a dependency graph.

When values change a subgraph is constructed that contains only the affected nodes.

Change values of white controls to see the effect.

Note: constraints are not computed during recalculate but afterwards in revalidate step.

rebuild is done 101 10 0 0 0 3 0 0 foo
some controls depending on the 'a' and 'b' controls
Some controls depending on the 'x' node
The data:
                    {log('default')}