# Class 38: Discussion of Exam 2

Back to Algorithmic Art. On to Manipulating Images with Script-Fu.

This outline is also available in PDF.

Held: Tuesday, April 10, 2007

Summary: Today we go over some of the key issues from exam 2.

Related Pages:

Due

Notes:

• Homework 12 should be ready this afternoon.
• The next reading should also be available this afternoon.

Overview:

• General issues.
• Problem 4.
• Problem 3.
• Problem 2.
• Problem 1.

## A Few General Issues

• I care about the form of the Six P's. It goes something like this:
• Three semicolons
• A space
• The keyword Procedure (optionally in all-caps)
• A carriage return
• Three semicolons
• Three spaces
• The name of the procedure
• A carriage return
• Three semicolons
• The keyword Purpose (optionally in all-caps)
• A carraige return
• Three semicolons
• Three spaces
• A one-sentence description of the procedure
• ...
• When you notice yourself writing similar code, you should think about ways to avoid duplication.
• I won't post all of the answers online, since students do a remarkable job of finding previous answers, and I do a poor job of hiding them.
• If you need answered emailed to you, please let me know.

Back to Algorithmic Art. On to Manipulating Images with Script-Fu.

Disclaimer: I usually create these pages on the fly, which means that I rarely proofread them and they may contain bad grammar and incorrect details. It also means that I tend to update them regularly (see the history for more details). Feel free to contact me with any suggestions for changes.

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Samuel A. Rebelsky, rebelsky@grinnell.edu

Copyright © 2007 Samuel A. Rebelsky. This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. To view a copy of this license, visit `http://creativecommons.org/licenses/by-nc/2.5/` or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA.