lib/lite/ruby/open_struct.rb in lite-ruby-1.1.12 vs lib/lite/ruby/open_struct.rb in lite-ruby-1.1.13

@@ -63,11 +63,16 @@
     # rubocop:enable Metrics/MethodLength, Naming/PredicateName
 
     def new_ostruct_member!(name)
       return if is_method_protected!(name)
 
-      define_singleton_method!(name) { @table[name] }
-      define_singleton_method!("#{name}=") { |x| @table[name] = x }
+      if respond_to?(:define_singleton_method!)
+        define_singleton_method(name) { @table[name] }
+        define_singleton_method("#{name}=") { |x| @table[name] = x }
+      else
+        define_singleton_method!(name) { @table[name] }
+        define_singleton_method!("#{name}=") { |x| @table[name] = x }
+      end
     end
 
   end
 end