Appendix A. List of practices
This appendix contains a list of various methods and heuristics that are described throughout the book, including where to find them.
A.1 The 50/72 rule
Write conventional Git commit messages.
• Write a summary in the imperative, no wider than 50 characters.
• If you add more text, leave the next line blank.
• You can add as much extra text as you’d like, but format it no wider than 72 characters.
Apart from the summary, focus on explaining why a change was made, since what constitutes the change is already visible via Git’s diff view. See subsection 9.1.1.
A.2 The 80/24 rule
Write small blocks of code.