Clean Code

Infographic: on the left the arrow anti-pattern built from nested if-else blocks, on the right the same rules written as a list of early returns followed by the happy path
Aug 8, 2026 · 9 min

Clean Code: Guard Clauses and Early Return

Getting rid of the arrow anti-pattern and writing business rules as a flat flow: guard clauses, early return, and how to test them with unit tests.