表参道.rb #34でLTしたものです

1. C byebug PR
@tzm_freedom

2. • Twitter: @tzm_freedom
• GitHub: tzmfreedom
• Blog: https://blog.freedom-man.com
•
• Ruby/Rails
• Ruby 2 Rails 1
• API
• .rb 2

4. • byebug(pry-byebug)
• REPL
•
• binding.irb
• REPL
•
• ruby-debug-ide(debase)
• RubyMine IDE
• web-console web REPL
• better_errors + binding_of_caller web REPL
•

5. byebug debase(ruby-debug-ide)
• 10.0.0 byebug debase
NoMethodError (undefined method `step_out' for #<Byebug::Context:
0x007fa4608278d0>):
• undefined step_out

8. byebug
• https://blog.freedom-man.com/byebug-codereading/
• TracePoint C
• TracePoint gem
byebug
• Ruby 2.5 bootsnap Rails byebug
RubyVM::InstructionSequence.load_from_binary TracePoint
• C

9. C gdb
• gdb ruby :
http://techlife.cookpad.com/entry/2015/12/09/163746
• gdb —args ruby ./hoge.rb
• gdb .gdbinit rc
• gdb dashboard
• ruby/ruby .gdbinit

10. • Init_context(), Init_breakpoint() debase
extern
• byebug Kernel.byebug `byebug/core` require
Init_context() Init_breakpoint()
•
• byebug Init_context() debase
Init_context()
• debase byebug
😇

11. Byebug::Context = Debase::Context

12. •
• C byebug_ prefix
• extern => static

14. byebug debase

15. byebug debase

16. debase
debase