#DATA DUPLICACY SOFTWARE#

And as you introduce other entities in your domain, this duplication might spread even more. class DeveloperĪs you can see, the same functionality exists in two places. To save time, a developer reused the code, thus generating duplication. Now, there's a different entity, Operator, that follows the same logic. You're applying some logic to format those IDs.

Let's say you're keeping track of the stories assigned to a developer. There are real downfalls associated with code duplication.īefore we talk about those problems, let's have a look at an example.

#DATA DUPLICACY SOFTWARE#

People without a background in software development might wonder: So what? However, this isn't just a stylistic matter. Regardless of the reason, the consequence is that you have the same code in more than one spot. A class evolved in functionality until it covered most of what another class does.People independently developed the same functionality in two places simultaneously.Somebody wanted to reuse a function in a different class, and copy-paste was the quickest solution.Simply put, it's when a snippet of code appears multiple times throughout a codebase. After that, I'll explain what you can do to prevent and fix it.

In this post, I'm going to talk about what code duplication is and why it's a drain on quality. Many projects are declared to be of poor quality due to excessive duplication, and developers lament the state of affairs. Code duplication is a common ailment in many codebases throughout the software industry.

Data duplicacy