Recomendados
Mais conteúdo relacionado
Mais procurados
Mais procurados (20)
Semelhante a Montreal.rb ruby debugging basics - march 20th 2012
Semelhante a Montreal.rb ruby debugging basics - march 20th 2012 (20)
Último
Último (20)
Montreal.rb ruby debugging basics - march 20th 2012
- 1. The ultimate guide to ruby debugging Rafael Rosa Fu March 2012 - Montreal.rb @rafaelrosafu
- 2. The ultimate guide to ruby debugging Rafael Rosa Fu March 2012 - Montreal.rb @rafaelrosafu
- 3. Ruby debugging basics Rafael Rosa Fu March 2012 - Montreal.rb @rafaelrosafu
- 4. About me More on that later
- 5. Why? ● TDD won't save you all the time ● Understand untested, legacy, complicated code ● Understand unexpected behavior ● Interactive coding
- 6. Why? ● "When I coded in Delphi 2 I had support for it on my IDE"
- 7. How? ● ● ● ● Stack traces puts, p, pp Logging debug module ● ruby-debug ○ ruby-debug19 ● Pry ○ pry-nav ○ pry-stack_explorer
- 8. How? ● ● ● ● Stack traces puts, p, pp Logging debug module ● ruby-debug ○ ruby-debug19 ● Pry ○ pry-nav ○ pry-stack_explorer
- 9. ruby-debug Created by Kent Sibilev and Rocky Bernstein ● https://github.com/ruby-debug/ruby-debug ● http://bashdb.sourceforge.net/ruby-debug. html ruby-debug19 is a port by Mark Moseley
- 10. ruby-debug for 1.8.7 1. gem install ruby-debug 2. profit
- 11. ruby-debug for 1.9.x 1. gem install ruby-debug19 2. profit (almost) ● Workaround for 1.9.3: ○ Need newer versions for linecache and ruby-debugbase, not on rubygems ○ Some stuff is still broken ○ https://gist.github.com/2047760 ○ Thanks to @fredostarr, @spastorino, @rafaeldx7 and @garyharan
- 12. ruby-debug ● ● ● ● ● ● Follow the code execution Inspect objects Set breakpoints See the stack Change state (be careful) Debug remotely
- 13. ruby-debug demo ● Lots of commands ○ ○ ○ ○ ○ ○ ● debugger, rdebug list, help, quit p, pp, ps, display, info break, next, step, continue disable, condition irb, where, edit, set, show Fingers crossed
- 14. ruby-debug demo Live demos always go wrong Sorry in advance :)
- 15. Pry
- 16. Pry ● Developed by John Mair (@banisterfiend) ● http://github.com/pry/pry ● Started as a turbo irb ● An ecosystem is growing around it ○ Lots of plugins
- 17. Pry ● gem install pry ● gem install pry-doc
- 18. Pry demo ● Nice features ○ ○ ○ ○ pagination autocomplete syntax highlight highly customizable ● Lots of commands and features ○ ○ ○ ○ ● ● ls, ls --help cd, nesting, exit .commands show-doc, show-method, edit-method pry-nav is not ready for primetime pry-stack_explorer is ok
- 19. Lessons learned ● Debugging is not a bad thing when used properly and sparingly ● Basic tools solve ~ 90% of the issues ● BDD/TDD will save you from debugging most of the time ● The future is quite cloudy for Ruby debug tools: ○ https://github.com/rocky/rb-trepanning ○ Cross-implementation? ○ http://blog.bithug.org/2011/09/maglev-debug
- 20. References - ruby-debug ● http://bashdb.sourceforge.net/ruby-debug.html ● http://railscasts.com/episodes/54-debugging-with-ruby● ● ● ● debug http://guides.rubyonrails. org/debugging_rails_applications.html https://github.com/ruby-debug https://github.com/mark-moseley/ruby-debug/ https://gist.github.com/2047760
- 21. References - Pry ● http://pry.github.com ● https://github.com/pry ● http://banisterfiend.wordpress.com/2012/02/14/the-pry● ● ● ecosystem/ http://pry.github.com/screencasts.html ○ Special thanks to @fnando :) http://railscasts.com/episodes/280-pry-with-rails http://twitter.com/banisterfiend
- 22. Questions ? I just need 5 more minutes after this :)
- 24. About me ● Coding professionally for 16 years ● Agilist, product and community guy too ● I love Ruby "Ruby is designed to make programmers happy" - Matz
- 25. About me
- 26. About me
- 27. Ruby community in Brazil 40 to 60 people every month
- 28. Ruby community in Brazil https://picasaweb.google.com/105291946909431816672
- 29. Ruby community in Brazil https://picasaweb.google.com/105291946909431816672
- 30. Ruby community in Brazil http://groups.google.com/group/dojo_sp
- 31. Ruby community in Brazil http://pothix.com/blog/events/encontro-de-numero-5-do-guru-
- 32. Ruby community in Brazil http://blog.lambda3.com.br/2012/02/dojo-dojo-
- 33. Ruby community in Brazil ~ 1,500 attendees, this year will be the 5th edition http://www.flickr.
- 34. Ruby community in Brazil ~ 1,500 attendees, this year will be the 5th edition http://www.flickr.
- 35. Ruby community in Brazil Everybody is invited - August 30 and 31 2012 - São Paulo http://www.flickr.