CPSC 421-020 Object-Oriented Programming Spring 2026

Week 15 Class 25 Thu Apr 23 Posted: Apr 23

Announcements

• XMLFramework Project

  GitHub Classroom invitation link in Brightspace.

• Course Evaluations

  • Open until Sunday May 3
  • I can view the number of completed evaluations
  • Individual responses and who filled out the evaluation is anonymous
  • I do not see the overall scores and comments until after I submit the course grades

Agenda

• Exercise 95: XMLFramework Quiz
• Exercise 96: Complete at least one @TODO in the XMLFramework Project.

• Notes: Design Pattern Facade

  Provide a unified interface to a set of interfaces in a subsystem

  Facade defines a higher-level interface that makes the subsystem easier to use

• Exercise 97: Design Pattern Facade Crossword

• Notes: Design Pattern Singleton

  Ensure a class only has one instance and provide a global point of access to it

• Exercise 98: Design Pattern Singleton Crossword

• Notes: C++ Templates

  View instantiated templates with clang:

  View instantiated templates online: cppinsights.io

  Benchmark: Function Pointers vs. Templates

• Exercise 99: C++ Templates Crossword

• Notes: Design Pattern Visitor

  Add operations to classes without changing them

  OutputTree Example from the notes

  Git Commands Git branch commands

  GitHub Classroom invitation link in Brightspace if you want to run this in GitHub Codespaces.

Unless otherwise noted, exercises are due by 3:30 pm on Mon, Apr 27