From: nobu.nokada@...
Date: 2004-06-09T07:53:15+09:00
Subject: Re: How can I use the last returned value?

Hi,

At Wed, 9 Jun 2004 02:03:37 +0900,
Dennis Ranke wrote in [ruby-talk:102807]:
> > In Python, I use '_'(underscore) for the last returned value.
> >>>> print "Hello"
> > "Hello"
> >>>> x = _
> >>>> print x
> > "Hello"
> >
> > What is the equivalent in Ruby?
> 
> If you mean what's the equivalent in irb then my answer would be:
> 
> IRB.CurrentContext.last_value
> 
> But that's a bit cumbersome ;)

EVAL_HISTORY enables _.

$ grep HISTORY ~/.irbrc
IRB.conf[:EVAL_HISTORY] = 1000
IRB.conf[:SAVE_HISTORY] = 100

$ irb
irb(main):001:0> 2+2
=> 4
irb(main):002:0> _
=> 4
irb(main):003:0>

-- 
Nobu Nakada