November 2024
Intermediate to advanced
430 pages
9h 7m
French
Content preview from Livre de cuisine du code propre
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Chapitre 22. Les exceptions
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L'optimisation entrave l'évolution. Tout doit être construit de haut en bas, sauf la première fois. La simplicité ne précède pas la complexité, mais la suit.
Alan Perlis
22.0 Introduction
Les exceptions sont un mécanisme extraordinaire pour favoriser un code propre en séparant les bons cas d'utilisation des erreurs et en traitant ces dernières de manière élégante. Malheureusement, certains langages à la mode comme Go ont décidé, au nom de l'optimisation prématurée, d'utiliser l'ancien mécanisme de code retour, forçant ainsi un grand nombre de conditions if (que beaucoup de développeurs oublient) et ne fournissant que des gestionnaires d'exceptions catchall de haut niveau.
Les exceptions sont ton meilleur outil pour séparer les préoccupations et t'aider à séparer le bon chemin de l'exceptionnel, même pour les situations imprévues. Elles créent un bon contrôle du flux et échouent rapidement. Elles nécessitent néanmoins une réflexion approfondie et un traitement adéquat pour garantir leur efficacité et éviter les pièges potentiels.
22.1 Suppression des blocs d'exception vides
Problème
Ton code ignore certaines exceptions.
Solution
N'ignore pas les exceptions. Traite-les.
Discussion
"On Error Resume Next" était une pratique très courante il y a quelques années. Cela violait le principe de la rapidité d'exécution (voir ...
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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.
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.