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Debugger

Debuggers help identify and fix software issues. Inspect code, variables, and runtime behavior with powerful debugging tools.

Debugger

A debugger lets you pause a program and look inside while it runs. You can step line by line, check values, and see where things go wrong. This turns guessing into clear steps, so you fix bugs faster and with confidence. Debugging helps both beginners and experts understand how code really behaves.

How do I start debugging?

Open your project and set a breakpoint on a line you want to study. Run the program in debug mode so it stops on that line. Use step over to go to the next line or step into to enter a function. Watch the variables panel to see values change as you move.

What tools should I use first?

  • Use breakpoints to pause at key lines.
  • Open variables to inspect values.
  • Use call stack to track paths.
  • Add watches to follow tricky data.

How do I find a crash quickly?

Reproduce the problem with clear steps. Read the error message and go to the first line in the stack. Check recent code around that spot and test simple ideas. Change one thing at a time and run again to confirm the cause.

Print logs or interactive debugger?

Print logs are easy and work everywhere, but they can clutter code. An interactive debugger shows values live and needs fewer edits. Start with logs for quick clues. Switch to the debugger when the bug hides or when timing matters.

How do I debug without fear?

Save your work and use version control so you can undo. Work on a copy or a safe branch. Write a tiny test that fails first, then fix it. Keep notes on what you tried so you do not repeat steps.

What tips help me learn faster?

Practice on small programs and simple puzzles. Read others’ bug reports to see patterns. Use the same steps on new problems so you build a habit. Celebrate each fix, because steady wins over lucky guesses.

Debugger FAQ

What is a debugger?
A debugger is a tool that lets you pause a program, look inside, and fix bugs. You set a breakpoint, step through lines, and watch variables and the call stack. With stack traces and memory view, the debugger shows where code fails, so you can repair errors faster than with print logs alone.
Which features help find bugs fast?
Useful features include breakpoints with conditions, step into/over, watch expressions, variable explorer, log points, and exception catch. Time travel or replay helps repeat tricky states. With these debugger tools, you spot the line that breaks and fix the bug without guessing.
Where do logs and stack traces appear?
Open the Console or Debug panel to see runtime logs, stack traces, and breakpoints hit. A side panel lists variables and watches, and the editor marks the current line. You can copy the trace, save it with the bug report, and use search to jump to files where the error started.
How often should I add breakpoints?
Add breakpoints whenever you start a new bug hunt or enter risky code. Place a few at inputs, outputs, and error paths, then remove them after tests pass. A light weekly cleanup keeps the debugger tidy, so your next session starts fast and every breakpoint still has a clear purpose.
How do I step through code safely?
Start in Debug mode, set a breakpoint before the risky line, and press Step over to run one line at a time. Use Step into for a function, and Step out to leave it. Watch variables and the call stack as you go. When values look wrong, stop, edit code, and test again with the debugger.
Which is better: breakpoints or print logs?
Breakpoints let you pause and inspect live state without changing code. Print logs are quick to add and help in production. Use both: rely on the debugger for deep bug hunts and stack traces, and add clean logs for long‑term monitoring so future errors are easier to spot and fix.