History of the Reading on Association Lists

February 11, 2000 [Henry Walker and John Stone]

• Created

March 17, 2000 [John Stone]

• Last revised
• This version available at http://www.cs.grinnell.edu/~stone/courses/scheme/spring-2000/association-lists.xhtml

Tuesday, 18 September 2000 [Samuel A. Rebelsky]

• Removed problems, which are now in separate lab. Updated some text.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2000F/Readings/alists.html.

Wednesday, 21 February 2001 [Samuel A. Rebelsky]

• Reformatted (including the addition of short section headings).
• Updated example to use lists, rather than pairs.
• Updated look-up-phone-number to take a second parameter.
• Added section on associating multiple values with a name.
• Added section on other kinds of lookup.
• Added comments for all procedures and values.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2001S/Readings/alists.html.

Sunday, 29 September 2002 [Samuel A. Rebelsky]

• Added another section to describe the improved implementation of look-up-phone-number.
• Added list of procedures covered.
• Updated the list of division chairs (yes, this reading is guaranteed to need updates).
• Added information on the implementation of assoc.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2002F/Readings/alists.html.

Monday, 3 February 2003 [Samuel A. Rebelsky]

• Updated some code slightly.
• Validated HTML.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003S/Readings/alists.html.

Sunday, 6 October 2006 [Samuel A. Rebelsky]

• Added link to PDF version.
• Moved history to a separate file.
• Rewrote the better version of lookup-telephone-number.
• Wrote a generic lookup procedure.
• Updated the directory entries to the current semester.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2006F/Readings/alists.html.