September 2024
Intermediate to advanced
304 pages
7h 50m
Spanish
Content preview from Patrones de Arquitectura con Python
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Capítulo 3. Un breve interludio: Sobre acoplamiento y abstracciones
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Permítenos una breve digresión sobre el tema de las abstracciones, querido lector. Hemos hablado bastante de abstracciones. El patrón Repositorio es una abstracción sobre el almacenamiento permanente, por ejemplo. Pero, ¿en qué consiste una buena abstracción? ¿Qué queremos de las abstracciones? ¿Y cómo se relacionan con las pruebas?
Consejo
El código de este capítulo está en la rama chapter_03_abstractions de GitHub:
git clone https://github.com/cosmicpython/code.git git checkout chapter_03_abstractions
Un tema clave de este libro, oculto entre los patrones extravagantes, es que podemos utilizar abstracciones sencillas para ocultar detalles desordenados. Cuando escribimos código por diversión, o en una kata,1 podemos jugar con las ideas libremente, martilleando las cosas y refactorizando agresivamente. Sin embargo, en un sistema a gran escala, nos vemos limitados por las decisiones tomadas en otras partes del sistema.
Cuando no podemos cambiar el componente A por miedo a romper el componente B, decimos que los componentes se han acoplado. Localmente, el acoplamiento es algo bueno: es señal de que nuestro código funciona conjuntamente, cada componente apoya a los demás, todos encajan en su sitio como los engranajes de un reloj. En la jerga, decimos que esto funciona cuando hay una gran cohesión ...
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I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.