Netsoc Ruby Tutorial

Netsoc Ruby Tutorial Shane hduairc@netsoc.tcd.iei January 13, 2009 Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 1 / 23Contents of this Tutorial 1 Introduction What is Ruby? About this Tutorial irb - the Interactive Ruby Shell 2 Problems and Solutions in Ruby Problem 1: Hello, world! 2: Silly binary stu Problem 3: Iterators 4: 2 + 2 = 5 Problem 5: I am Vinny 6: Hash-like thing (Map) Problem 7: Adding accessor methods to Map 8: Betterrds Problem 9: Turning Map into a mixin 10: Improving the mixin Project Euler 1: Higher-order functions in Ruby 3 Further Reading Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 2 / 23Introduction What is Ruby? What is Ruby? This is Ruby: 5.times {puts "Hello, world!"} Ruby: Is a dynamic, object-oriented programming language. Combines the semantics of Smalltalk with Perl-inspired syntax. Everything is an object, even 5. Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 3 / 23Introduction What is Ruby? What is Ruby? This is Ruby: 5.times {puts "Hello, world!"} Ruby: Is a dynamic, object-oriented programming language. Combines the semantics of Smalltalk with Perl-inspired syntax. Everything is an object, even 5. Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 3 / 23Introduction What is Ruby? What is Ruby? This is Ruby: 5.times {puts "Hello, world!"} Ruby: Is a dynamic, object-oriented programming language. Combines the semantics of Smalltalk with Perl-inspired syntax. Everything is an object, even 5. Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 3 / 23Introduction What is Ruby? What is Ruby? This is Ruby: 5.times {puts "Hello, world!"} Ruby: Is a dynamic, object-oriented programming language. Combines the semantics of Smalltalk with Perl-inspired syntax. Everything is an object, even 5. Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 3 / 23Introduction About this Tutorial About this Tutorial 00.rb This tutorial will: Not focus directly on Ruby’s features or philosophy. Show solutions to problems implemented in Ruby. Explain how and why these solutions work. Reveal the features and philosophy of Ruby this way. Notes: The rst such solution is at http://netsoc.tcd.ie/ duairc/ruby/01.rb The current is indicated in the top-right corner (00.rb). If you download these slides, those indicators are hyperlinks. Get ’em here: http://netsoc.tcd.ie/ duairc/ruby/slides.pdf Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 4 / 23Introduction About this Tutorial About this Tutorial 00.rb This tutorial will: Not focus directly on Ruby’s features or philosophy. Show solutions to problems implemented in Ruby. Explain how and why these solutions work. Reveal the features and philosophy of Ruby this way. Notes: The rst such solution is at http://netsoc.tcd.ie/ duairc/ruby/01.rb The current is indicated in the top-right corner (00.rb). If you download these slides, those indicators are hyperlinks. Get ’em here: http://netsoc.tcd.ie/ duairc/ruby/slides.pdf Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 4 / 23Introduction About this Tutorial About this Tutorial 00.rb This tutorial will: Not focus directly on Ruby’s features or philosophy. Show solutions to problems implemented in Ruby. Explain how and why these solutions work. Reveal the features and philosophy of Ruby this way. Notes: The rst such solution is at http://netsoc.tcd.ie/ duairc/ruby/01.rb The current is indicated in the top-right corner (00.rb). If you download these slides, those indicators are hyperlinks. Get ’em here: http://netsoc.tcd.ie/ duairc/ruby/slides.pdf Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 4 / 23Introduction About this Tutorial About this Tutorial 00.rb This tutorial will: Not focus directly on Ruby’s features or philosophy. Show solutions to problems implemented in Ruby. Explain how and why these solutions work. Reveal the features and philosophy of Ruby this way. Notes: The rst such solution is at http://netsoc.tcd.ie/ duairc/ruby/01.rb The current is indicated in the top-right corner (00.rb). If you download these slides, those indicators are hyperlinks. Get ’em here: http://netsoc.tcd.ie/ duairc/ruby/slides.pdf Shane hduairc@netsoc.tcd.iei () Netsoc Ruby Tutorial January 13, 2009 4 / 23