Refactoring: Improve Continuously, Not Occasionally
Tests do more than catch defects. They document behaviour and give developers the confidence to change software safely.
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Refactoring: Improve Continuously, Not Occasionally
Every file you touch gives you a chance to make the next change easier.
Configuration: Separate Policy from Mechanism
If changing a setting requires changing code, your system is tighter than it needs to be.
Transforming Programming: From State to Flow
When you reduce hidden state and focus on clear transformations, debugging turns from detective work into simple reasoning.
Decoupling and the Law of Demeter: Talk Only to Your Friends
The less your code knows about its surroundings, the easier it is to change safely.
The Essence of Good Design: Make Change Easy
Good design is not about being clever, it is about making change feel safe, simple, and routine.
Software Entropy: Fix Broken Windows Early
Small messes slowly rot projects. Keep things clean as you code.