RuleDesign-class: Class for rule-based designs
In 0liver0815/onc-crmpack-test: Object-Oriented Implementation of CRM Designs

The difference to Design class is that model, stopping and increments slots are missing.

nextBest: how to find the next best dose, an object of class NextBest
cohortSize: rules for the cohort sizes, an object of class CohortSize
data: what is the dose grid, any previous data, etc., contained in an object of class Data
startingDose: what is the starting dose? Must lie on the grid in data

emptydata <- Data(doseGrid = c(5, 10, 15, 25, 35, 50, 80))

# inizialing a 3+3 design with constant cohort size of 3 and
# starting dose equal 5
myDesign <- RuleDesign(nextBest = NextBestThreePlusThree(),
                       cohortSize = CohortSizeConst(size=3L),
                       data = emptydata,
                       startingDose = 5)