October 2024
Intermediate to advanced
270 pages
8h 13m
Spanish
Content preview from 97 cosas que todo programador Java debe saber
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Capítulo 59. Nombra la fecha
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Kevlin Henney
Mientras java.util.Date se deprecia lenta pero inexorablemente hacia el ocaso, con java.time ocupando su lugar, merece la pena detenerse a aprender algunas lecciones de su problemática vida antes de dejarla descansar en paz.
La lección más obvia es que el manejo de la fecha y la hora es más difícil de lo que la gente espera, incluso cuando lo espera. Es una verdad universalmente reconocida que un solo programador en posesión de la creencia de que entiende de fechas y horas debe estar necesitado de una revisión de código. Pero no es eso en lo que quiero centrarme aquí, ni en la importancia de la inmutabilidad de los tipos de valor, ni en lo que hace que una clase sea (in)adecuada para subclases, ni en cómo utilizar clases en lugar de enteros para expresar un dominio rico.
El código fuente se compone de espacios, signos de puntuación y nombres. Todos ellos transmiten significado al lector, pero es en los nombres donde se transmite (o se deja de transmitir) la mayor parte del significado. Los nombres importan. Mucho.
Dado su nombre, estaría bien que un Date representara una fecha de calendario, es decir, un día concreto... pero no es así. Representa un punto en el tiempo que puede considerarse que tiene un componente de fecha. ...
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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.
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.