![String
String class : part of the standard
library
How Ruby understands text
Instances
String.new or ‘’ or “” or Q%[] or
q%[]](https://image.slidesharecdn.com/week2-121016174746-phpapp02/85/Week2-12-320.jpg)
Week2
- 1. Ruby Week 2
- 2. Agenda Homework Review and Submission Git Branches The Ruby Language Ruby Gems (grb) IRB: String objects, String Class, Variables, puts/gets Making Our Own Objects
- 3. HomeWork Review Questions.txt strings_and_rspec_spec.rb Send a Pull Request to UWE-Ruby/ RubyFall2012
- 4. Git Review GitHub forks and repos (remote & local) branches (DeMo!)
- 5. Rspec Review Code that Tests Code!! Describe a feature, set an expectation. Red-Green-Refactor
- 6. Ruby Everything is an Object! Type Doesn’t matter! (respond_to?) Speaking Ruby : Interpreter Needed! MRI, YARV, JRuby
- 7. Ruby Gems Packaged Ruby Code Open Source iPhone user: “There’s an app for that!” Ruby programer: “There’s a gem for that!”
- 8. GRB Git Remote Branch Ruby Gem to help with git! Combines remote branch steps into one! DeMo!
- 9. IRB Interactive Ruby! Our Ruby Interpreter! We speak ruby, it translates! Understand Ruby code, evaluates it, gives us the result (inspect)
- 10. Ruby Everything evaluates to something nil is NULL or nothing or Not Set Every Object respond_to? inspect => true
- 11. Objects Ruby: everything is an object Everything is an instance of a class Ruby knows about certain classes of things: Standard Library
- 12. String String class : part of the standard library How Ruby understands text Instances String.new or ‘’ or “” or Q%[] or q%[]
- 13. String Class http://www.ruby-doc.org/core-1.9.3/ String.html Methods : Messages we can send, what an instance will respond to Chomp, *, +, include?, upcase
- 14. Variables Named location Points to something Contents Can Change
- 15. String Interpolation my_name = “Renée” “Hello #{my_name}”
- 16. puts / gets put string get string puts “Hello World” user_input = gets user_input = gets.chomp
- 17. Mad-Libs! noun = gets.chomp adjective = gets.chomp verb_past_tense = gets.chomp “The #{adjective} #{noun} #{verb_past_tense} past the graveyard”
- 19. Making Objects Tell Ruby About Something New! A new class of stuff!
- 20. What is a Book All Books have....??
- 21. Defining New Classes Initialize attributes / readers and writers Scope Instance variables Instance methods
- 22. Homework Reading and Simon Says Spec