#!/usr/bin/env ruby
# This code comes from http://ruby-it.org/pages/Forma+Lambda
# Check the page for copyright notice and explanations



 array.each { |argomenti| codice }

 def f(argomenti)
  codice
 end
 for i in array
  f(i)
 end

oggetto= lambda {|args| codice}

 >> def esponenziale(num)
 >>  proc { num=num*num }
 >> end
 => nil
 >> b=esponenziale(2)
 => #<Proc:0x027d61d8@(irb):2>
 >> a=esponenziale(3)
 => #<Proc:0x027d61d8@(irb):2>
 >> a.call
 => 9
 >> b.call
 => 4
 >> a.call
 => 81
 >> a.call
 => 6561
 >> b.call
 => 16 

 >> def add_sub(default)
 >>   return proc {default+=1},proc {default-=1}
 >> end
 => nil
 >> add,sub=add_sub(10)
 => [#<Proc:0x0275a968@(irb):25>, #<Proc:0x0275a878@(irb):25>]
 >> add
 => #<Proc:0x0275a968@(irb):25>
 >> add.call 
 => 11
 >> sub.call
 => 10
 >> sub.call
 => 9
 >> add.call
 => 10
 >> add.call
 => 11
 >> add.call
 => 12
 >> sub.call
 => 11

 Thread.new { codice }