Ruby Class 1
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This document provides an overview of the Ruby programming language. It discusses that Ruby was created by Yukihiro "Matz" Matsumoto to emphasize human needs over computer needs. Major versions of Ruby include 1.0, 1.8.x, 1.9.x, and implementations like JRuby and Rubinius. The document outlines Ruby concepts that will be learned like dynamic typing, everything being an object, blocks and lambdas, and regular expressions support. It also discusses the book "The Well-Grounded Rubyist" and learning approaches like test-driven development and exploration.
Ruby Class 1
- 1. RubyClass
- 2. The Ruby LanguageOriginally by Yukihiro "Matz" Matsumoto“Ruby is designed for programmer productivity and fun, following the principles of good user interface design. He stresses that systems design needs to emphasize human, rather than computer, needs.”http://en.wikipedia.org/wiki/Ruby_(programming_language)#HistoryRuby 1.0 was released in 1996.
- 3. The Ruby LanguageDynamically typedInterpretedCan be modified at runtimeObject orientedBlocks & lambdasNice support for Regular Expressions
- 4. Ruby ImplementationsRuby 1.8.x (MRI)Ruby 1.9.x (YARV)RubiniusJRubyMacRuby, HotCocoaIronRuby for .NET
- 5. What you will learnRubyLanguage concepts & toolsLanguage syntaxSome standard library classes & gemsCommon patterns
- 6. BookThe Well-Grounded RubyistCovering Ruby 1.9David A. Black
- 7. How you will learnExploration: experiment, playTest-Driven Development (TDD)Initially as a learning methodologyLater as a development methodologyAsk questionsLearn to find your own answersReadPlus whatever works best for you
- 8. Class StructureTalkLive Coding DemonstrationsIn-class codingCoding at home (or in social groups)Google Group
- 9. Other ResourcesSF Ruby MeetupRailsBridgeSee Last page of hand-out for more
- 11. Ruby Language OverviewDynamically typedInterpretedCan be modified at runtimeObject orientedBlocks & lambdasNice support for Regular Expressions
- 12. Lets get startedIRB: InteractiveRuBy>> 4>> 4 + 4
- 13. Everything is an object“test”.upcase“test”.class“test”.methods
- 14. Everything evaluates to something2 + 2(2+2).zero?
- 15. Methods are Messagesthing.do(4)thing.do 4thing.send “do”, 4
- 16. Operators are Methodsthing.do 4thing.do(4)thing.send “do”, 41 + 21.+(2)1.send "+", 2
- 17. Write your first Ruby class
- 18. Test-First LearningSimilar methodology to TDDwith a different purpose and workflowTeacher writes the testStudent implements the code
- 19. Test-Driven DevelopmentDesignFocus / Project ManagementDocumentation / CollaborationCreation of Tests
- 20. Moving to TDDBuild tests before refactoring or upgradingTest-drive bug fixesWrite tests for anything you worry aboutContinuous Integration is essentialRemove unused (untested) code
- 21. RED – GREEN – REFACTORWrite the testWatch it failMake it passMake the code good, make sure it still passes
- 24. RspecDescribe the featureVerify expectation
- 25. Demonstration