a simple way to debug tons of libs that use ruby's net/http

net-http-debug.rb

BEGIN {

  require 'net/http'
  
  Net::HTTP.module_eval do
    alias_method '__initialize__', 'initialize'
    
    def initialize(*args,&block)
      __initialize__(*args, &block)
    ensure
      @debug_output = $stderr ### if ENV['HTTP_DEBUG']
    end
  end

}

Why module_eval? Isn't this exactly the same, and (imho) much more readable?

module Net
  class HTTP
    alias_method '__initialize__', 'initialize'

    def initialize(*args,&block)
      __initialize__(*args, &block)
    ensure
      @debug_output = $stderr ### if ENV['HTTP_DEBUG']
    end
  end
end