History of Reading on Boolean Values

2 September 1997 [John David Stone]

• Created. Part of a compound reading on Lists, Booleans, and predicates.
• This version available at .

17 March 2000 [John David Stone]

• The Boolean section is now in a reading on Procedure definitions.
• This version available at http://www.cs.grinnell.edu/~stone/courses/scheme/fall-1997/lists.html.

Monday, 4 September 2000 [Sam Rebelsky]

• Put into handout form and updated.

Wednesday, 31 January 2001 [Sam Rebelsky]

• Updated formatting.
• Added links to new reference pages. Did not include the numeric predicates due to lack of time.
• Added section on and and or (copied from http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2000F/Readings/andor.html, although that section was extended and updated.

Tuesday, 10 September 2002 [Samuel A. Rebelsky]

• Updated formatting.
• Moved links (including links for numeric predicates) to point to the Glimmer Scheme Reference pages. (And added lots of stuff to the Glimmer Scheme Reference.)
• Added the section on "Not False and False".
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2002F/Readings/boolean.html.

Tuesday, 27 January 2003 [Samuel A. Rebelsky]

• Fixed error in output for (not (not 1)) (thanks ON).
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS153/2003S/Readings/boolean.html.

Tuesday, 4 February 2003 [Samuel A. Rebelsky]

• Added summary.
• Added more section headers.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003S/Readings/boolean.html.

Monday, 15 September 2003 [Samuel A. Rebelsky]

• A few minor changes.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003F/Readings/boolean.html.

Tuesday, 5 September 2006 [Samuel A. Rebelsky]

• Minor rearrangements.
• Added sample code for and and or as control structures.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2006F/Readings/boolean.html.

Thursday, 1 February 2007 [Samuel A. Rebelsky]

• Added note that students need not understand the difference between the eq?, eqv?, and equal? procedures.
• Updated history to include prehistory.
• Moved history to a separate file.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2007S/Readings/boolean.html.

Sunday, 16 September 2007 [Samuel A. Rebelsky]

• Rearranged sections. (Moved the section on and and or as control structures later.)
• Added an introduction.
• Added examples from image computation.
• Other, minor, cleanup.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2007F/Readings/boolean-reading.html.