Session Twenty

I began the day by handing back HW#4 and talking about a number of issues:

First issues of "grading"

• Questions 4 and 5 were separate issues and required separate diagrams
• Arrows, arrowhead sharp, and direction, all matter in navigability/multiplicity diagrams
• Don't use silly local variables (variables declared, assigned, and then immediately returned as in getExits for some people in Room)

Second, issues of discussion/learning

• How is it that the Rooms created in Game's constructor are saved?
• We talked earlier about communication paths.  Notice the fact that Game doesn't know of the existence of CommandWords but only knows of the Parser...
• Use of static in CommandWords
• Don't be afraid to learn things not clearly in an assignment (code duplication in getExitsString)

Finally, I walked you through HW#5