Class 2: Getting started with Ruby

Held: Wednesday, 25 January 2017

We start to investigate some issues in Ruby.

Preliminaries

Related Pages

• Eboard 2 (Source)

Updates

News / Etc.

• We now have a schedule in place. The rest of the syllabus should be there tonight.
• I lied. Most students last year said they took 4-5 hours for the Ruby tutorial. That means I’ve used about half of your homework time for this week (assuming that you got through everything).

Homework

• More Ruby
• Reading journal

A Quick Overview of Ruby

• Modern programming language.
• “One” designer.
• Imperative, functional, and OOP characteristics.
• Good at “Get the job done quickly.”

Ruby

What’s something familiar?

What’s something new and exciting you’ve discovered about Ruby?

How does Ruby handle a programmer’s need for multiple inheritance?

What is something particularly confusing or puzzling in the reading?

Some Ruby Problems

Write sums_to_n?(vals,val) that returns true if any pair of values from vals sums to val.

Write multiple_of_4?(bitstring) that takes a string of 0’s and 1’s (representing an unsigned integer) as input and returns true if the string represents an integer divisible by four.

Write starts_with_consonant?(str) that determines if a string starts with a consonant.