Typographical errors, such as g()Īn error caused by a user rather than the application, but may still incur an update depending on that person’s seniorityĪ variable to examine during debugger execution The historical list of all functions called before the error occurred For example, data loss would normally be considered more problematic than a UI issue unless the frequency of occurrence is very low When running line by line, complete execution of a command without stepping into a function it calls When running line by line, complete execution of the current function and return to the calling code When running code line by line in a debugger, step into the function being called User incompetence disguised as a bug report, typically followed by a response to “Read The Flipping Manual” Re-emergence of a previously fixed bug perhaps owing to other updatesĪ bug which is similar or related to another Rewriting code to help readability and maintenance Hard-to-trace bugs dependent the sequence or timing of uncontrollable events Where a bug is allocated on a list of planned updates The program works but doesn’t act as intended Output of runtime information to the console or a file The most-often made but least useful bug reportĪn instruction to a debugger to show the value of a variable at a point during execution How often or under what conditions a bug will occur All developers say it at some point during their career The point at which a debugger stops a program so its state can be inspectedĪ tool which offers debugging facilities such as running code line by line to inspect internal variable statesĪs in the claim: “it’s not a bug, it’s a feature”. Terminologyĭebugging has its own selection of obscure jargon, including the following: Term Fortunately, Node.js has some great tools to help trace errors. Finding that bug is another matter, and developers can spend many unhappy hours trying to locate the source of an issue. Fixing a bug is often easy - a corrected character or additional line of code solves the problem. Debugging is the black art of fixing software defects.
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