Add method to an instanced object

Question

obj = SomeObject.new

def obj.new_method
  \"do some things\"
end

puts obj.new_method
> \"do some things\"

This works ok. However, I need to do

Answer 1

It's been a long time since I asked this. In ruby 1.9+, there's a better way of doing this by using define_singleton_method, as follows:

obj = SomeObject.new

obj.define_singleton_method(:new_method) do
  "do some things"
end