Ruby case when

a = 4

case a

when 1..2
  puts "It's between 1 and 2"
when 1..5
  puts "It's between 1 and 5"
when 6
  puts "It's 6"
when String
  puts "You passed a string"
else
  puts "You gave me #{a} -- I have no idea what to do with that."
end

prints "It's between 1 and 5"

need to override the ===

for an example :

class MyCls2
 def initialize (pParam)
  @myValue = pParam
 end 
 
 def GetMyValue
  @myValue
 end 
 
 def === (other_object)
  if  other_object.GetMyValue == @myValue
   true 
  else 
   false 
  end 
 end
end  

a = MyCls2.new ( 2 )

b = MyCls2.new ( 2 )

case a

when b
  puts " - 1- "
else
  puts "You gave me #{a} -- I have no idea what to do with that."
end