November 2024
Intermediate to advanced
802 pages
19h 26m
French
Content preview from Manuel de cuisine Scala, 2e édition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Chapitre 23. Les types
Cet ouvrage a été traduit à l'aide de l'IA. Tes réactions et tes commentaires sont les bienvenus : translation-feedback@oreilly.com
Comme tu peux le constater en jetant un coup d'œil au Scaladoc des classes de collections, Scala dispose d'un puissant système de types. Cependant, à moins que tu ne sois le créateur d'une bibliothèque, tu peux aller très loin dans Scala sans avoir à descendre trop bas dans les profondeurs des types Scala. Mais dès que tu commenceras à créer des bibliothèques pour d'autres utilisateurs, tu devras les apprendre.
Ce chapitre fournit des recettes pour les problèmes les plus courants liés aux types que tu rencontreras, mais lorsque tu auras besoin d'aller plus loin, je te recommande vivement le livre Programming in Scala (Artima). Martin Odersky, l'un de ses auteurs, est le créateur du langage de programmation Scala, et je considère ce livre comme "la référence" pour Scala.
Le système de types de Scala utilise un ensemble de symboles pour exprimer différents concepts de types génériques, notamment les concepts de bornes, de variance et de contraintes. Avant de sauter dans les recettes, les plus courants de ces symboles sont résumés dans lessections suivantes.
Note sur les niveaux et les types de programmation
Bien avant, en janvier 2011, Martin Odersky a défini six niveaux de connaissances nécessaires aux différents types de programmeurs Scala. Il utilise les niveaux A1-A3 pour les programmeurs d'applications, et L1-L3 pour les concepteurs ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
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.