Overview

• Preliminaries.
  • Admin.
  • Assignments.
  • Questions.
• A bit about the course.
• Very little Scheme.
• Lab.
• Debrief.

Preliminaries

Admin

• Welcome to our new mentor, Helen D!
• Yes, I'll take attendance again.
  • And please make sure to preface your comments/questions with your name.
• I got over 200 email messages from students on Tuesday.
  
  • (Yes, it's my fault for having students submit homework via email.)
  • So that I can navigate my inbox, It's very important to me that you take the time to title your email messages correctly.
  • I plan to go over your HW1 over the weekend.
• Sorry for forgetting to update the link to the current reading. I hope you found it in the syllabus.
• We will have a quiz on Friday. (Parts of an algorithm; A bit of Scheme)
• Extra credit: Thursday extra on summer research in CS, Thursday @ 4:30 in Noyce 3821.
• Extra credit: CS Table Friday at noon in the Day PDR in the Marketplace. The topic is "3D Printing (of Body parts)"
• Extra credit: Theatre Gigante on Friday. Some piece on Spaulding Grey.

Support Infrastructure

• Class mentors
• Tutors most nights (see purple sheet)
• Mentor sessions Thursday night, 7-8, 9-10
• Weekly review session, Thursday 2:15-3:05 (may move)
• I will have a review session at 2:15 p.m. tomorrow.
  
  • While I don't expect to have anyone show up, I thought it would be good to get started on the weekly review sessions.

Homework

• There are two readings for Friday's class, one on numbers and one on symbolic values.
• The first real homework assignment has been posted. It will require some knowledge from Friday's class, but it might be worth looking at.
  • I will be assigning homework partners on Friday.
• Today's lab writeup, Extra problem 2
  
  • Due before class on Friday
  • Email subject: CSC 151.02 Writeup 1: Starting Scheme (YOUR NAME HERE)
  • Email subject: CSC 151.02 Writeup 1: Starting Scheme (Kim Spasaro and Toby Baratta)
  • You can, but need not, write up the lab with your partner.
  • Due "two days" later.

Questions

A bit about the course

• Goals
  • Help you learn about CS: Algorithms, Data Structures etc.
    • Write your own
    • A few classics
  • Make you a better problem solver
  • Some programming skill applicable to many domainsa
  • Skills beyond CS - Group work and more
• Differences
  • Methodology - Learn by doing, not listening
  • Different way of thinking

Very little scheme

• Design algorithms
• Put them into play (+ 2 3)a
  • "Open paren, name of procedure, space arguments close paren"
  • (define sqrt171 (sqrt 171))

Lab

Important keystrokes:

then P : Bring back the previous expression -up-arrow : Bring back the previous expression

Using max:

(max val1 val2 val3) => the largest of the three values
(max 7 1 2 6 5) => 7