Ruby is method defined

# respond_to?(symbol, include_all=false) works well for testing if an object has a method defined
# .try() will not handle methods that have parameters, respond_to? does handle those methods
if my_obj.respond_to?(:my_method)
	my_obj.my_method(arg1, arg2)
end

# You can also try instance_methods(false).include?(symbol) for class objects
my_class_obj.instance_methods(false).include?(:my_method)

Source: stackoverflow.com

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