Summary
In this chapter, we established that a very important aspect of writing code is to update existing code, which is known as brownfield development. We also looked at how GitHub Copilot can help you with this task.
The most important message to take away from this chapter is to ensure that you have an approach to updating code that de-risks the changes you’re about to make. It’s better to make a small change several times than a big one once. It’s also strongly recommended to have plenty of tests in place before you start changing code.
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