ruby - Using `defined?` at one-level expansion -

Define method ? Returns the result for the syllabic expression given as an argument, for example, the result of

  is defined? Foo   
 Is sensitive that the  foo  is really any defined variable / method, it does not matter if the  foo  is a string Is defined as a valid (existing) expression:  
  foo = "array"   
 or not:  
  foo = "nonExistingConstant"   
 What is it possible to define ?  The logic given is a level extension? That is, for  foo = "Array" , it should be returned to  "continuous"  and  foo = "NonExistingConstant" , it should be sent to < Code> zero . if so, how?  
  
 
 
 Since you only have to check constants:  
  ['array' , 'Nonexistent class']. Do each. Name | What is called Object.const_defined? (Name) end # & gt; & Gt; True # & gt; & Gt; False