Constructor # new EvalChain() create an evaluation chain. Methods # Add(f) add a function to the chain. Parameters: Name Type Description f function a function to be called by the chain. # Clear() empty the chain, regardless of the remaining steps # Size() → {int} Returns: number of entries in the chain. Type: int # Step() → {boolean} execute the next function (if any). Returns: true if there were any functions to execute, else false. Type: boolean