December 2021
Intermediate to advanced
352 pages
9h 32m
English
book
Beautiful C++: 30 Core Guidelines for Writing Clean, Safe, and Fast Code
by J. Guy Davidson, Kate Gregory
Content preview from Beautiful C++: 30 Core Guidelines for Writing Clean, Safe, and Fast Code
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Chapter 4.2
Enum.3: Prefer class enums over “plain” enums
Constants
Constants are great. Types are great. Constants of a specific type are really great. This is why class enums are just fantastic.
Historically, and we hope you no longer feel the need to do this, constants were defined as preprocessor macros. You might have seen something like this in a geometry-related source file:
#define PI 3.1415926535897932385
If you were unfortunate, in another file you might have seen something like this:
#define PI 3.1415926 // fine for float, insufficient for double
Or this:
#define PI 3.1415926535987932385 // mis-transcribed
Or this:
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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.