From: Mauricio Fernandez <mfp@...>
Date: 2006-08-25T03:43:57+09:00
Subject: Re: do not understand this closure

On Fri, Aug 25, 2006 at 03:27:10AM +0900, ara.t.howard@noaa.gov wrote:
> On Fri, 25 Aug 2006, rak rok wrote:
> 
> >Is there any way to have a proc object be callable identically to a method,
> >ie with the parentheses?  Is there a reason to keep the notation distinct?
> >
> >Thanks,
> >-rr-
> 
>   harp:~ > cat a.rb
>   def the_method() 'namespace one' end
> 
>   the_method = String.new 'namespace two'
> 
>   p the_method()
>   p the_method
> 
> 
>   harp:~ > ruby a.rb
>   "namespace one"
>   "namespace two"
> 
> that said, 1.9 has support for a_proc()

This used to work:

$ cat proc.rb 
a = proc{|x| p x}
(a)(1)

... but doesn't anymore.

$ ruby19 -v proc.rb 
ruby 1.9.0 (2006-08-13) [i686-linux]
proc.rb:2: warning: useless use of a variable in void context
proc.rb:2: syntax error, unexpected '(', expecting $end
(a)(1)


Right now, it's
 
 RUBY_RELEASE_DATE            # => "2006-08-13"
 RUBY_VERSION                 # => "1.9.0"
 a = proc{|x| x+1}
 a.(2)                        # => 3


[gotta update my changelog]
-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby