From: Ryan Davis <ryand-ruby@...>
Date: 2012-10-18T05:33:38+09:00
Subject: Re: autolog: shortcut for set_trace_func to debug ruby via console output, etc.


On Oct 17, 2012, at 11:35 , Gary Weaver <lists@ruby-forum.com> wrote:

> If it helps anyone, I wrote a shortcut for set_trace_func, so next time
> you want to just add a line before and after some function you are
> trying to debug you can have Ruby temporarily output every line, method,
> etc. executed. Also, it lets you define the format, use other loggers,
> etc. via a proc/lambda define, since you might not like the default
> format. Apologize for posting here if it wouldn't help- maybe you are
> using a real debugger.
> 
> Example:
> 
> In Gemfile add:
> gem 'autolog'
> 
> Around some part of code add this before:
> Autolog.methods
> and this after:
> Autolog.off
> 
> Hope it helps someone who needs a quick tool periodically without all
> the time sink of profiling or setting a breakpoint and debugging in a
> slow IDE.
> 
> https://github.com/garysweaver/autolog

How does this compare to stdlib's tracer?

  ##
  # Start tracing
  #
  # === Example
  #
  #   Tracer.on
  #   # code to trace here
  #   Tracer.off
  #
  # You can also pass a block:
  #
  #   Tracer.on {
  #     # trace everything in this block
  #   }