Week 10
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This chapter contains and introduction to the subject of data structures along with a heavy dose of abstraction. Sections 8.4 and 8.5 present a historical look at how the concepts of classes and objects can be viewed as the result of an evolutionary process that starts with primitive data types, progresses through user defined types and abstract data types, and culminates with classes. The final section discusses how pointers can be implemented in main memory and shows how the machine language of Chapter 2 could be extended to include indirect referencing.

Dan Ingalls: Object-Oriented Programming Video