Named after a story from The Pragmatic Programmer , rubber duck debugging involves explaining your code, line by line, to an inanimate object (a rubber duck). The act of verbalizing assumptions often makes the flaw obvious. You don’t actually need a duck — a colleague, a cat, or even a silent voice memo works. Many developers have solved their own bugs halfway through describing the problem to someone else.
: Re-test the system to ensure the bug is gone and no new issues were introduced. Common Debugging Tools & Techniques How to debug to learn LLVM Backend - Beginners
: The code does if balance >= amount: balance = balance - amount without a lock. Two threads pass the condition simultaneously because the initial balance is unchanged. Named after a story from The Pragmatic Programmer
Effective debugging requires a specific psychological approach. Developers must transition from a creative mindset (writing code) to a scientific, investigative mindset (analyzing failures).
You cannot confidently fix an anomaly if you cannot reliably force it to happen. Replicating the bug requires capturing the exact input data, state transitions, hardware configurations, and environmental conditions that triggered the initial failure. 2. Isolate the Anomaly Many developers have solved their own bugs halfway
While the physical act of removing the moth was "debugging," the term evolved to encompass the logical process of fixing code errors.
Do not guess. Form a falsifiable hypothesis. Two threads pass the condition simultaneously because the
To become a master of debug , you must cultivate a specific mindset: .
When the bug occurs, inspect the program’s state: variable values, call stack, memory layout, and register contents. Tools like breakpoints, watches, and core dumps are invaluable.
Over decades, programmers have refined a set of debugging techniques that work across any language or platform. Master these, and you’ll be prepared for almost any bug.
Master developers don’t rely on a single method. They mix and match techniques depending on the bug’s nature.