Module 12 Study Guide

Learning Objectives

• Explain what pointer and reference types are and explain pointer operations and pointer problems
• Explain the differences between reference and value types and illustrate these differences
• Explain and illustrate dangling pointers and memory leaks
• Explain how to resolve dangling pointer problems with tombstones and locks-and-keys
• Explain the reference count and mark-and-sweep methods of garbage collection
• Explain what type checking is and why it is important
• Define type compatibility, type errors, type conversion and type coercion
• Contrast strong typing and weak typing and give examples of each
• Contrast static typing and dynamic typing and give examples of each
• Explain why type equivalence is important
• Compare name equivalence and structure equivalence
• Determine when two types are equivalent given type equivalence rules for a language

Resources

• CPL 6.11-6.15
• Slides: Lam

Lab

Please complete the lab for this week: types

Deliverables

The test for this module will take place in class on Friday. You will have an opportunity to re-take a different version of the same test next week. If you choose to do the re-take, your grade for this module will be the higher of the two scores.