Rapid Feedback Learning Tools

Key Ideas

1. speed/ease
2. isolation

Ruby Tools

• irb
• new blank rails app
• rails console
• TDD experimentation
• Ruby Koans Online
• Try Ruby
• Codecademy Web
• Codecademy Ruby

Exercise 1

Check a StackOverflow Answer in irb

http://stackoverflow.com/questions/7837815/round-a-number-up-in-ruby

irb
>> 12.356.round 2
=> 12.36
>>

Exercise 2

Blank rails app

rbenv shell 1.9.3-p327
rails new rails_lab_1
cd rails_lab_1
rails generate controller Lab lab1 lab2
rake db:migrate
s. #edit app/views/lab/lab1.html.erb
rails server

Exercise 3

Ruby Koans

Ruby Koans Online

• About Hashes
• About Modules

JSFiddle

• JSFiddle

WebKit Developer Console

• tweak CSS on the fly
• experiment with javascript & breakpoints
• see HTTP request/response content

Intro to stackoverflow.com

• research before asking
• include just the right amount of code and description

References

• Ruby Koans Online
• Try Ruby
• Codecademy Web
• Codecademy Ruby
• Ruby Monk
• Stack Overflow
• Bret Victor - Inventing on Principle

The End

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