ruby - Why Am I Getting a SystemStackError In This Code? - 


class x   class << self     def attr_string arg       eval("def #{arg}; return #{arg.to_s}; end")     end   end end

is code working with. trying make class macro, attr_accessor. when call

foo = 50 x.attr_string :foo x.foo

i systemstackerror. why this?

class x   def attr_string arg     (class << self; self; end).class_eval       define_method arg         arg       end     end   end end

or little cleaner

class x   def self.attr_string arg     self.class.instance_eval       define_method(arg) { arg.to_s }     end   end end

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