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10 Things you should know about Ruby
- 1. 10 Things You ShouldKnow About Ruby
- 2. 1. Ruby !=Rails
- 3. • Programming Language •1995 – First public release • Many Implementations • MRI 1.8 – Matz’s Ruby Intepreter • YARV 1.9 • JRuby • IronRuby • Rubinius • MacRuby • MagLev
- 4. “I wanted ascripting language that was more powerful than Perl, and more object-oriented than Python.That's why I decided to design my own language”
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- 6. • Web applicationframework written in Ruby • “Ruby” on “Rails” • David Heinemeier Hansson (DHH) • Extracted from 37Signal’s Basecamp in 2004
- 7. • Open Source •Currently maintained by Rails Core Team • git://github.com/rails/rails • Latest version: 3.0.1
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- 19. Everything in Ruby isObject
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- 27. 4. No methodcall
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- 34. Module • Collection ofmethods and constants • Not-instanciatable • But callable • Append features upon included
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- 36. Mixin • Include methodsyou want from another module • No limit of how many modules you include
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- 40. Ruby’s Block • Passinga block as argument • Method “yield” or “call” the block • May passing a object as argument • Result from the block goes back to the method
- 42. 7. We loveduck http://www.flickr.com/photos/ymorimo/3975152607/
- 43. Duck typing • Ifit quacks like a duck, it’s a duck! • Check for object’s property, not interface
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- 47. Duck Punching (Monkey patch) •Objects and class are open • Add method to object even at Runtime! • Not really recommend, less maintainability, might break some stuff • But it’s awesome
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- 51. Testing ... • Ensureeverything still works after you make change to something else • Save you ass from client’s call at 3AM • Test driven development • Write test – watch it fails – write just enough code to make it pass – refactor
- 52. Testing tools • RSpec •Cucumber • Test::Unit • Rack::Test
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- 57. Gem • Library writtenunder Ruby or C • Packaged by owner and upload to RubyGems.org • Easy to install, just gem install gem_name
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- 59. Question? Thank you! Prem Sichanugrist @sikachu http://sikachu.com 3.9454in Beautiful Software