FuelPHPで３種のprofilerを使ってみたThis document discusses test-driven development (TDD). It provides an example of using TDD to develop a function to calculate the area of a square. The key steps are: 1) Write a test that fails for an initial function interface; 2) Implement the function to pass the test; 3) Refactor the code. It emphasizes writing tests before code, testing isolated units, and using a structured process of red-gr
