10 lines
		
	
	
		
			198 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
		
		
			
		
	
	
			10 lines
		
	
	
		
			198 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
|   | module Predicable | ||
|  |   def attr_predicate(*attrs) | ||
|  |     attrs.each do |attr| | ||
|  |       define_method attr do | ||
|  |         instance_variable_get("@#{attr.to_s.sub(/\?$/, "")}") == true | ||
|  |       end | ||
|  |     end | ||
|  |   end | ||
|  | end |