How do I check If a Class already exists in Ruby

Posted by Jimmy on Stack Overflow See other posts from Stack Overflow or by Jimmy
Published on 2009-07-27T08:38:32Z Indexed on 2010/05/29 1:22 UTC
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ruby

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class

How do I check If a Class already exists in Ruby,

My code is:

puts "enter the name of the Class to see if it exists"   
nameofclass=gets.chomp  
eval (" #{nameofclass}......  Not sure what to write here")

I was thinking of using:

eval "#{nameofclass}ancestors.     ....."

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