History of Lab on Characters and Strings in Scheme

5 March 1997 [Henry Walker]

• Document on strings in Scheme created.
• This version available at http://www.cs.grinnell.edu/~stone/courses/sche me/spring-1997/lab-strings.html.

8 October 1997 [John David Stone]

• Document on characters in Scheme created.
• This version available at http://www.cs.grinnell.edu/~stone/courses/sche me/fall-1997/characters.html.

17 March 2000 [John David Stone]

• Last update of the Stone version of the characters document before Rebelsky br anch
• That document available at http://www.cs.grinnell.edu/~stone/courses/scheme/spring-2000/characters. xhtml.
• Last update of the Stone version of the strings document.
• That document available at http://www.cs.grinnell.edu/~stone/courses/scheme/spring-2000/strings.xht ml.

Tuesday, 3 October 2000 [Samuel A. Rebelsky]

• Combined the laboratory exercises from those two documents.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2000F/Labs/strings.html.

Wednesday, 7 February 2001 [Samuel A. Rebelsky]

• Deleted procedures that required repetition or recursion.
• Added new "Generate HTML" procedures.

Sunday, 18 February 2001 [Samuel A. Rebelsky]

• Changed the order of the parameters to markup based on experience using it.
• Updated question on using Scheme for markup for clarification.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2001S/Labs/strings.html.

Monday, 16 September 2002 [Samuel A. Rebelsky]

• Added list of potentially useful procedures.
• Reformatted slightly.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2002F/Labs/strings.html.

Friday, 7 February 2003 [Samuel A. Rebelsky]

• Minor updates to text.
• Added historical links.
• Added extra work for those with extra time. Moved a few problems to that section.

Monday, 10 February 2003 [Samuel A. Rebelsky]

• Added some more explanation to the char-control? procedure.
• Added notes about displaying output.
• Corrected a misnumbering (okay, a mis-lettering) on one of the HTML in Scheme procedures.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003S/Labs/strings.html.

Thursday, 18 September 2003 [Samuel A. Rebelsky]

• Added summary.
• Numbered extra exercises.
• Considered writing new exercises.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2003F/Labs/strings.html.

Sunday, 3 September 2006 [Samuel A. Rebelsky]

• Dropped all of the HTML-generating exercises (and there were a few), since we no longer make HTML a focus of 151.
• Added the sentence-generating exercises.
• Added link to PDF version.
• Other minor cleanup.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2006F/Labs/strings.html.

Tuesday, 30 January 2007 [Samuel A. Rebelsky]

• Added prehistory.
• Minor textual updates.
• Moved history to a separate file.

Wednesday, 31 January 2007 [Samuel A. Rebelsky]

• Corrected typo in list of character procedures.
• This version available at http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2007S/Labs/strings.html.