Exercise 1.
Abelson & Sussman, exercises 4.27 and 4.29.
A version of the lazy evaluator is in ~cs61as/lib/lazy.scm
Abelson & Sussman, exercises 4.27 and 4.29.
The homework has been separated into crucial questions and less crucial questions, but you have to do all of them - this separation is just so that you know which ones to attempt first.
Abelson & Sussman, exercises 4.25, 4.26 and 4.28.
Abelson & Sussman, exercises 4.30, 4.32 and 4.33.
Do the following reading:
Abelson & Sussman, exercise 4.31. This exercise doesn't require great brilliance, but it's a lot of work and involves a lot of debugging of details. On the other hand, completing this exercise will teach you a lot about the evaluator.
Fix the handle-infix procedure from project 4 to handle infix precedence for arithmetic operators properly. That is, multiplications and divisions should be done before additions and subtractions. Comparison operators like = come last of all.