From: Robert Klemme <shortcutter@...>
Date: 2010-10-07T21:16:46+09:00
Subject: Re: Can anyone give a an example of this please

On Thu, Oct 7, 2010 at 2:01 PM, Kaye Ng <sbstn26@yahoo.com> wrote:
> "code blocks may accept none, one, or more parameters"
>
> I understand how ONE parameter is passed using the 'each' method.
> I also understand how TWO parameters is passed, like in this code
> x = { "a" => 100, "b" => 20 }
> x.delete_if { |key, value| value < 25 }
> p x
>
> Can anyone give me a very simple and executable code where:
> NO parameters is passed, and
> THREE parameters is passed

14:14:24 ~$ ruby19 <<CODE
> def none; yield; end
> def one; yield 1; end
> def three; yield 1,2,3; end
> none { puts "called" }
> one {|x| puts "Got one: #{x}"}
> three {|a,b,c| puts "Got three: #{a}, #{b}, #{c}"}
> three {|a| p a}
> three {|*a| p a}
> CODE
called
Got one: 1
Got three: 1, 2, 3
1
[1, 2, 3]
14:15:44 ~$

> SIMPLE CODE/SYNTAX ONLY PLEASE, BEGINNER HERE. =D

Please do not shout.

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/