From: Ragav Satish <ragavsatish@...>
Date: 2008-10-08T23:58:49+09:00
Subject: Re: Accessing source code of a block

stephan.zimmer wrote:
> Dear all,
> 
> say I'm given a function "f" taking a block as argument:
> 
> def f(&block)
>   # some code
> 
>   p "#{block.to_code}"
> end
> 
> Is there any way to access the source code of the block, i.e. for
> calling "f { x+1 }"
> the "to_code" function would give back "x+1"?
> 
> Stephan

As Robert mentioned there is no way to do this out of the box but you 
could use the ruby2ruby gem.

require 'rubygems'
require 'ruby2ruby'

def f(&block)
  puts block.to_ruby
end

f{|x| x +1}  #=> proc { |x| (x + 1) }

While this would give you the code, I'd be reluctant to use this in 
anything other than toy programs.

--Cheers
--Ragav
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