On Feb 13, 2008 4:47 AM, Jari Williamsson <jari.williamsson / mailbox.swipnet.se> wrote: > How can I test if an instance method is defined for a class, without > having to create an instance of that class? > > Simple example: Test if 'length' defined for the 'String' class? > > > Best regards, > > Jari Williamsson I don't know if it's the best way, but there is #instance_methods irb(main):008:0> Fixnum.instance_methods.grep /ins/ =>["inspect", "instance_variable_defined?", "instance_variables", "instance_variable_get", "instance_of?", "instance_eval", "instance_variable_set"] Todd