From: Piergiuliano Bossi <p_bossi_AGAINST_SPAM@...>
Date: 2004-02-10T16:35:01+09:00
Subject: Re: evaluate and print an expression

Bermejo, Rodrigo wrote:
> 
> 
> def evaluate(code)
>   puts "#{code}==>"
>   eval code
> end
> 
> evaluate("1+2==3")
> 
> 1+2==3 ==>
> true

:-)

Ok, I understand that I haven't explained myself clearly.

The point is not how to make it work with an expression as a String 
("1+2==3" for example), but working directly with code.

At the end the question is: is it possible to print the code of an 
expression?

Remember that I'm trying to do something like this:

irb(main):012:0> def evaluate(&code)
irb(main):013:1>   p code
irb(main):014:1>   code.call
irb(main):015:1> end
=> nil
irb(main):016:0> evaluate { 1+2==3 }
#<Proc:0x02a4ea78@(irb):16>
=> true

Instead of having:
     #<Proc:0x02a4ea78@(irb):16>
I'd like to get:
     { 1+2==3 }
or something like that.

I think that the answer in ruby is: no, it's not possible.
But I may be wrong.

Ciao, Giuliano


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