CSC151.02 2016S, Class 44: Files in Scheme ========================================== _Overview_ * Preliminaries. * Admin. * Upcoming Work. * Extra Credit. * Questions. * Quiz. * Lab. Preliminaries ------------- ### Admin * Continue partners! * I will continue to bring you food (or food-like substances) until I am caught up on grading. (You may be getting food until you graduate from Grinnell.) * Today: Fruit! * I'm hopeful for making some progress this weekend. Maybe food will stop eventually. * Note that there's a [grading rubric](../assignments/project-rubric.txt) for the project. Pay attention to it as you work on your proposal and project. * A few of you seemed interested in how we spend donations. I've written [a too-long letter on the issue](http://www.cs.grinnell.edu/~rebelsky/musings/donor-thank-you.html) ### Reminders * Office hours this week * See http://rebelsky.youcanbook.me. * Ask me about other available times. * Tutor hours * Sunday, 3-5 p.m. * Sunday-Thursday, 7-10 p.m. * Review Sessions * Wednesday at 8pm in CS commons with Zachary * Thursday at 10 am with SamR * Thursday at 8pm in CS commons with Alex ### Upcoming Work: * No reading for Monday! * Monday will be time for you to work with your group on finishing the project proposal. * Lab Writeup: Exercise 6 * Send email titled __CSC 151 Lab Writeup 44 (Your Names)__ * Do not include the underscores. * Send to * Due before class on Tuesday. * Project proposals due Monday night. ### Extra Credit * Send your reports to with subject "CSC 151 Extra Credit". (Do not include the quotation marks.) * Send opportunities to me before class with subject "CSC 151 EXTRA CREDIT OPPORTUNITY!" #### Academic / Artistic * Tonight at 7pm: Sharon Day, Environmental and Social Justice from the Lens of a Two Spirit Ojiwe Woman, ARC 302 * Scholars' Convocation: Dutch Global Horizons, Thursday, April 28, 11 am, JRC 101 * Damon Williams: Bigger Than The Cops, April 28, 4pm or 5:15 pm #### Peer * Lords of the Flies, 7:30 pm April 22nd, 2:00 pm April 23rd, 2:00 9pm April 24th. (Sold out, but you go standby for the rest.) * Second Annual Contra into Spring Dance, April 22nd, Main Quad, 7:30 p.m. * Fruit (grapes and big-ass strawberries), cookies, and crackers * Stickers, too! * Mentors and cool people, too! * The strangly titled "Soul Vaccination" Friday in Herrick at 8pm * Drag, Saturday. Bring money to give to the performers to give to charity. * Rushdie's East/West, May 6/7 at 7:30 p.m. #### Regular Peer * Social Dance Workshop Tuesdays 7:00-8:00 in Bucksbaum Dance Studio * Post-break ExCo on British Politics Wednesdays at 8:00 in JRC 203. Just show up; you don't need to sign up. * Pun club Saturdays at 4pm in Younker * Electronic Potpourri on KDIC Fridays at Five * Space Odyssey KDIC Fridays at Six * Bollywood, Fridays, 7:30-8:30, Younker * Effective Altruism club, 2:30-3:30 Sundays in JRC 226. #### Misc * Town hall on Substance Use, Sunday, April 24, 1 p.m. and 7 p.m. * Any of the fora on the report from the Residential Learning Task Force. * Tuesday, April 26, 11:00 a.m. - 12:00 noon, JRC 101 * Tuesday, April 26, 6:00 p.m. - 7:00 pm, JRC 209 ### No Extra Credit, But Good * Writer on campus at 4:15 tonight! * Third year students, design a logo or something for a vinyl sticker. Gift card to PC! * Super dope Poet tonight at 7:00 in The Wall * Super dope poet workshop tomorrow at 11:00 a.m. ### Questions Quiz ---- * Joy! Fun! Lab --- How would you check the sum? > Try `sum-of-file` with a simpler file. > Open the file, copy and paste into a spreadsheet, then sum. > In DrRacket, open the file, insert `(+ ` at the beginning, insert ')' at the end, click "Run" Why would you check the sum? > Historical evidence suggests that we often get an "off by one" error when doing computations (e.g., we might miss the first or last value). What's the writeup? > Exercise 6. This is class 44.