Determines whether the unknown u has been explicitly modified after creation time.
Returns an IOAssignment with the same initial content as the current assignment.
Returns an IOAssignment with the same initial content as the current assignment. Changes to the IOAssignment are not reflected to the current assignment.
An iterable of unknowns which have been explicitly modified after creation time.
Update an IOAssignment assignment.
An IOAssignment is an assignment used for input, output and internal working of fixpoint solvers. It also explicitly keeps track of unknowns which are modified after creation time.
type for unknowns
type for values