Answering : "It is the materialisation of a reusable and generic solution in a lot of recurrent problems, based in the experiences of passed developments. Therefore, a pattern can be applied to a class of analogous problems, decreasing the efforts in conception" >From : Buschmann F., Meunier R., Rohnert H., Sommerlad P. e Stal, M. Pattern-Oriented Software Architecture - A System of Patterns. Wiley a
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