c# ean 13 check For more details on error-prone 1 code, see Target error-prone 2 modules in Section 24.6. in C#

Paint EAN13 in C# For more details on error-prone 1 code, see Target error-prone 2 modules in Section 24.6.

For more details on error-prone 1 code, see Target error-prone 2 modules in Section 24.6.
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Be suspicious of classes and routines that have had defects before Classes that have had defects before are likely to continue to have defects. A class that has been troublesome in the past is more likely to contain a new defect than a class that has been defect-free. Re-examine error-prone classes and routines. Check code that s changed recently If you have a new error that s hard to diagnose, it s usually related to code that s changed recently. It could be in completely new code or in changes to old code. If you can t find a defect, run an old version of the program to see whether the error occurs. If it doesn t, you know the error s in the new version or is caused by an interaction with the new version. Scrutinize the differences between the old and new versions. Check the version control log to see what code has changed recently. If that s not possible, use a diff tool to compare changes in the old, working source code to the new, broken source code. Expand the suspicious region of the code It s easy to focus on a small section of code, sure that the defect must be in this section. If you don t find it in the section, consider the possibility that the defect isn t in the section. Expand the area of code you suspect, and then focus on pieces of it using the binary search technique described above.
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For a full discussion of 0 integration, see 29, 1 Integration.
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Integrate incrementally Debugging is easy if you add pieces to a system one at a time. If you add a piece to a system and encounter a new error, remove the piece and test it separately. Check for common defects Use code-quality checklists to stimulate your thinking about possible defects. If you re following the inspection practices described in Section 21.3, you ll have your own fine-tuned checklist of the common problems in your environment. You can also use the checklists that appear throughout this book. See the List of Checklists following the table of contents.
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9 details on how involving
other developers can put a beneficial distance between 1 you and the problem, see Section 21.1, Overview of 2 Collaborative Development 3 Practices.
Talk to someone else about the problem Some people call this confessional debugging. You often discover your own defect in the act of explaining it to another person. For example, if you were explaining the problem in the salary example, you might sound like this:
Hey, Jennifer, have you got a minute I m having a problem. I ve got this list of employee salaries that s supposed to be sorted, but some names are out of order. They re sorted all right the second time I print them out but not the first. I checked to see if it was new names, but I tried some that worked. I know they should be sorted the first time I print them because the program sorts all the names as they re entered and again when they re saved wait a minute no, it doesn t sort them when they re entered. That s right. It only orders them roughly. Thanks, Jennifer. You ve been a big help. Jennifer didn t say a word, and you solved your problem. This result is typical, and this approach is perhaps your most potent tool for solving difficult defects.
Take a break from the problem Sometimes you concentrate so hard you can t think. How many times have you paused for a cup of coffee and figured out the problem on your way to the coffee machine Or in the middle of lunch Or on the way home Or in the shower the next morning If you re debugging and making no progress, once you ve tried all the options, let it rest. Go for a walk. Work on something else. Go home for the day. Let your subconscious mind tease a solution out of the problem.
The auxiliary benefit of giving up temporarily is that it reduces the anxiety associated with debugging. The onset of anxiety is a clear sign that it s time to take a break.
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