Homework 8

This homework is based on Sections 6, 7 and 8 of the Textbook. Version updated on Sun 23 May 2021 04:15:21 PM PDT.

Problems

• 6.5.(b)
• 6.8
• 6.11.(b)
A proposed solution for this problem, note that the figure number in the question is wrong, it should be Fig 6.18, is:

    expr -> term { (+ | -) term }
    term -> factor { (* | /) factor }
    factor -> ( expr ) | number
    number -> digit { digit }
    digit -> 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

What is confusing (possibly incorrect) in this proposed solution?
• 6.22
• 6.42.(a)
• 7.7.(a) through (f)
• 7.8
Only the last question: "What does the program print using each kind of scope rule?"
• 7.15
• 8.4
• 8.14
• 8.29.(a)
In Haskell syntax: f g x = g (g x).