August 2024
Intermediate to advanced
1014 pages
26h
Spanish
Content preview from Python fluido, 2ª edición
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Capítulo 10. Patrones de diseño con funciones de primera clase
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La conformidad con los patrones no es una medida de la bondad.
Ralph Johnson, coautor del clásico de los Patrones de Diseño 1
En ingeniería de software, unpatrón de diseñoes una receta general para resolver un problema de diseño común. No es necesario que conozcas los patrones de diseño para seguir este capítulo. Te explicaré los patrones utilizados en los ejemplos.
El uso de patrones de diseño en programación se popularizó con el libro de referenciaDesign Patterns: Elements of Reusable Object-Oriented Software (Addison-Wesley) de Erich Gamma, Richard Helm, Ralph Johnson y John Vlissides, también conocidos como "la Banda de los Cuatro", un catálogo de 23 patrones consistentes en disposiciones de clases ejemplificadas con código en C++, pero que se supone que también son útiles en otros lenguajes orientados a objetos.
Aunque los patrones de diseño son independientes del lenguaje, eso no significa que todos los patrones se apliquen a todos los lenguajes. Por ejemplo, el Capítulo 17 mostrará que no tiene sentido emular la receta del patrón Iterador en Python, porque el patrón está integrado en el lenguaje y listo para usar en forma de generadores, que no necesitan clases para funcionar y requieren menos código que la recetaclásica.
Los autores de Design Patterns reconocen en su introducción que el lenguaje ...
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