July 2021
Intermediate to advanced
378 pages
9h 35m
English
Content preview from Robust Python
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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.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.
Chapter 7. Adopting Typechecking Practically
Many developers dream of the days when they’ll finally work in a completely green-field project. A green-field project is one that is brand-new, where you have a blank slate with your code’s architecture, design, and modularity. However, most projects soon become brown-field, or legacy code. These projects have been around the block a bit; much of the architecture and design has been solidified. Making big, sweeping changes will impact real users. The term brown-field is often seen as derogatory, especially when it feels like you are slogging through a big ball of mud.
However, not all brown-field projects are a punishment to work in. Michael Feathers, author of Working Effectively With Legacy Code (Pearson), has this to say:
In a well-maintained system, it might take a while to figure out how to make a change, but once you do, the change is usually easy and you feel much more comfortable with the system. In a legacy system, it can take a long time to figure out what to do, and the change is difficult also.1
Feathers defines legacy code as “code without tests.” I prefer an alternate definition: legacy code is simply code where you can no longer discuss the code with the developers who wrote it. In lieu of that communication, you rely on the codebase itself to describe its behavior. If the codebase clearly communicates its intentions, it is a well-maintained system that is easy to work in. It may take a little bit of time to understand ...
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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.