5
Computation Models and Design by Refinement
Objectives
After reading this chapter, you should understand:
- How program execution can be abstracted through various program execution models
- The Functional Model of computation
- The Imperative Model of computation
- Proofs of Correctness for simple algorithms
- Efficiency of programs
- Recursive programs and considerations for efficiency
- Scope Rules
- Tail Recursion and its implications
- Program Design through Step-wise Refinement
No amount of genius can overcome a preoccupation with detail.
—Marion Levy
There’s an easier way to do anything.
—Author unknown
Chapter Outline
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