September 2024
Intermediate to advanced
328 pages
8h 14m
Spanish
Content preview from Programación funcional con C#
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Capítulo 6. Sindicatos discriminados
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Las uniones discriminadas (UD) son una forma de definir un tipo (o clase en el mundo de la programación orientada a objetos) que en realidad es uno de un conjunto de tipos diferentes. Antes de utilizarla, hay que comprobar de qué tipo es realmente una instancia de una UD en un momento dado.
F# dispone de DUs de forma nativa, y es una característica muy utilizada por los desarrolladores de F#. A pesar de compartir un tiempo de ejecución común con C#, y de que la característica está ahí para nosotros en teoría, sólo existen planes para introducirlas en C# en algún momento, pero no se sabe con certeza cómo ni cuándo. Mientras tanto, podemos simularlas a grandes rasgos con clases abstractas, y ésa es la técnica de la que voy a hablar en este capítulo.
Este capítulo es nuestra primera incursión en algunas de las áreas más avanzadas de la FP. Los capítulos anteriores se centraban más en cómo tú, el desarrollador, puedes trabajar de forma inteligente, no dura. También hemos estudiado formas de reducir la repetición de código y de hacer que el código sea más robusto y fácil de mantener.
Las UD son una estructura de programación que también hará todo esto,1 pero son algo más que un simple método de extensión, o un arreglo de una sola línea para eliminar un poco de boilerplate. El concepto de las UD se parece más a un patrón de diseño, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.