Mega Code Archive
Use module_eval to create dynamic method
<![CDATA[
class Numeric
[['add', '+'], ['subtract', '-'],
['multiply', '*',], ['divide', '/']].each do |method, operator|
module_eval %{ def #{method}_2
self #{operator} 2
end }
end
end
4.add_2 # => 6
10.divide_2 # => 5
]]>