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c# ean 13 barcode generator An Ineffective Approach in Visual C#.NET
An Ineffective Approach Draw EAN-13 Supplement 5 In Visual C#.NET Using Barcode generator for .NET Control to generate, create EAN / UCC - 13 image in .NET applications. www.OnBarcode.comRead GS1 - 13 In C#.NET Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET framework applications. www.OnBarcode.comUnfortunately, programming classes in colleges and universities hardly ever offer instruction in debugging. If you studied programming in college, you might have had a lecture devoted to debugging. Although my computer-science education was excellent, the extent of the debugging advice I received was to put print statements in the program to find the defect. This is not adequate. If other programmers educational experiences are like mine, a great many programmers are being forced to reinvent debugging concepts on their own. What a waste! Paint Barcode In Visual C#.NET Using Barcode printer for Visual Studio .NET Control to generate, create bar code image in .NET applications. www.OnBarcode.comBarcode Scanner In C#.NET Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications. www.OnBarcode.comThe Devil s Guide to Debugging
EAN-13 Supplement 5 Generator In .NET Framework Using Barcode maker for ASP.NET Control to generate, create UPC - 13 image in ASP.NET applications. www.OnBarcode.comUPC - 13 Generator In Visual Studio .NET Using Barcode printer for Visual Studio .NET Control to generate, create EAN13 image in Visual Studio .NET applications. www.OnBarcode.comProgrammers do not always use available data to constrain their reasoning. They carry out minor and irrational repairs, and they often don t undo the incorrect repairs. Iris Vessey UPC - 13 Generation In VB.NET Using Barcode generation for .NET Control to generate, create European Article Number 13 image in VS .NET applications. www.OnBarcode.comPDF-417 2d Barcode Printer In C# Using Barcode printer for .NET framework Control to generate, create PDF 417 image in Visual Studio .NET applications. www.OnBarcode.comIn Dante s vision of hell, the lowest circle is reserved for Satan himself. In modern times, Old Scratch has agreed to share the lowest circle with programmers who don t learn to debug effectively. He tortures programmers by making them use this common debugging approach: Make EAN13 In Visual C#.NET Using Barcode encoder for Visual Studio .NET Control to generate, create GS1 - 13 image in .NET applications. www.OnBarcode.comGenerate Bar Code In C# Using Barcode creator for Visual Studio .NET Control to generate, create bar code image in VS .NET applications. www.OnBarcode.comFind the defect by guessing To find the defect, scatter print statements randomly throughout a program. Examine the output to see where the defect is. If you can t find the defect with print statements, try changing things in the program until something seems to work. Don t back up the original version of the program, and don t keep a record of the changes you ve made. Programming is more exciting when you re not quite sure what the program is doing. Stock up on Jolt cola and Twinkies because you re in for a long night in front of the terminal. Encode Code39 In Visual C#.NET Using Barcode drawer for .NET framework Control to generate, create Code 3 of 9 image in VS .NET applications. www.OnBarcode.comCreate Uniform Symbology Specification Codabar In Visual C# Using Barcode generator for VS .NET Control to generate, create Monarch image in .NET framework applications. www.OnBarcode.comde Complete
Generating 2D Barcode In .NET Framework Using Barcode drawer for Visual Studio .NET Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications. www.OnBarcode.comDataMatrix Scanner In None Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications. www.OnBarcode.com23. Debugging
Data Matrix ECC200 Drawer In None Using Barcode creator for Software Control to generate, create ECC200 image in Software applications. www.OnBarcode.comPrinting Barcode In None Using Barcode generator for Word Control to generate, create barcode image in Office Word applications. www.OnBarcode.comPage 6
Reading PDF-417 2d Barcode In Visual C#.NET Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications. www.OnBarcode.comPrint Matrix Barcode In VB.NET Using Barcode creator for .NET framework Control to generate, create 2D Barcode image in VS .NET applications. www.OnBarcode.comDon t waste time trying to understand the problem It s likely that the problem is trivial, and you don t need to understand it completely to fix it. Simply finding it is enough. Fix the error with the most obvious fix It s usually good just to fix the specific problem you see, rather than wasting a lot of time making some big, ambitious correction that s going to affect the whole program. This is a perfect example: Drawing EAN13 In Java Using Barcode encoder for Android Control to generate, create EAN / UCC - 13 image in Android applications. www.OnBarcode.comEAN-13 Supplement 5 Maker In Java Using Barcode creation for Java Control to generate, create EAN / UCC - 13 image in Java applications. www.OnBarcode.comx = Compute( y ) if ( y = 17 ) x = $25.15 -- Compute() doesn't work for y = 17, so fix it
Who needs to dig all the way into Compute() for an obscure problem with the value of 17 when you can just write a special case for it in the obvious place This approach is infinitely extendable. If we later find that Compute() returns the wrong value when y=18, we just extend our fix: x = Compute( y ) if ( y = 17 ) x = $25.15 else if ( y = 18 ) x = $27.85 -- Compute() doesn't work for y = 18, so fix it -- Compute() doesn't work for y = 17, so fix it Debugging by Superstition
Satan has leased part of hell to programmers who debug by superstition. Every group has one programmer who has endless problems with demon machines, mysterious compiler defects, hidden language defects that appear when the moon is full, bad data, losing important changes, a vindictive, possessed editor that saves programs incorrectly you name it. This is programming by superstition. If you have a problem with a program you ve written, it s your fault. It s not the computer s fault, and it s not the compiler s fault. The program doesn t do something different every time. It didn t write itself; you wrote it, so take responsibility for it. Even if an error at first appears not to be your fault, it s strongly in your interest to assume that it is. That assumption helps you debug: It s hard enough to find a defect in your code when you re looking for it; it s even harder when you ve assumed your code is error-free. It improves your credibility because when you do claim that an error arose from someone else s code, other programmers will believe that you have checked out the problem carefully. Assuming the error is your fault also saves you the embarrassment of claiming that an error is someone
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