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my_array = Array.new
def my_array.random_dump(number)
number.times { self << rand(100) }
end
p my_array.random_dump(3)
p my_array.random_dump(2)
p my_array # => [6, 45, 12, 49, 66]
# That's enough of that.
class << my_array
remove_method(:random_dump)
end
my_array.random_dump(4)
# NoMethodError: undefined method 'random_dump' for [6, 45, 12, 49, 66]:Array
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