Редактирование: Ruby/Array/include

==Check an Array for a Certain Item==



   
  <!-- start source code -->
   
    <source lang="ruby">

# The include? method returns true if the supplied parameter is in the array, 
# and false otherwise:

x = [1, 2, 3]
puts x.include?("x")
puts x.include?(3)
 </source>
    
   


==include? with parenthesis==



   
  <!-- start source code -->
   
    <source lang="ruby">

year = [2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009]

year.include?( 2010 ) # => false
 </source>
    
   


==Is an element in this array==



   
  <!-- start source code -->
   
    <source lang="ruby">

year = [2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009]

puts year.include? 2004 # => true
 </source>