History of Lab on Objects in Scheme

December 1997 [John David Stone and/or Henry Walker]

• Original version.
• This version available at http://www.cs.grinnell.edu/~stone/courses/scheme/spring-1997/lab-oop.html.

25 April 2000 [John David Stone]

• Last update.
• This version available at http://www.cs.grinnell.edu/~stone/courses/scheme/spring-2000/object-oriented-programming.xhtml.

Wednesday, 6 December 2001 [Samuel A. Rebelsky]

• Sam's first version. Problems taken from the Stone reading above.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2000F/Labs/oop.html.

Tuesday, 1 May 2001 [Samuel A. Rebelsky]

• Reformatted.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2001S/Labs/oop.html.

Wednesday, 4 December 2002 [Samuel A. Rebelsky]

• Reformatted.
• A few small changes to wording.
• Rearranged the first two problems.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2002F/Labs/oop.html.

Monday, 5 May 2003 [Samuel A. Rebelsky]

• Added summary.
• Renamed file.
• Added code for make-switch.
• Other minor updates.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003S/Labs/objects.html.

Sunday, 19 November 2006 [Samuel A. Rebelsky]

• Added link to PDF version.
• Moved history to a separate file.
• Removed code for make-switch (since it changed in the reading).
• Other, minor, updates.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2006F/Labs/objects.html.

Tuesday, 22 November 2006 [Samuel A. Rebelsky]

• Added four-way switch.
• Changed the hint on the final problem to suggest that students use two vectors, rather than a vector of length two. (Sam's new philosophy: vectors are ways to store mutable things.)
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2006F/Labs/objects.html.