c# ean 13 reader FURTHER READING For in C#.NET

Creating EAN13 in C#.NET FURTHER READING For

0 FURTHER READING For
Make EAN13 In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create UPC - 13 image in .NET framework applications.
www.OnBarcode.com
EAN13 Decoder In C#.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
details on the typographic approach to formatting source code, see Human Factors and Typography for More Readable Programs (Baecker and Marcus 1990).
Barcode Generator In Visual C#
Using Barcode drawer for Visual Studio .NET Control to generate, create barcode image in .NET applications.
www.OnBarcode.com
Bar Code Recognizer In Visual C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
The Fundamental Theorem of Formatting
EAN 13 Creator In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
www.OnBarcode.com
EAN / UCC - 13 Creator In .NET Framework
Using Barcode creation for .NET framework Control to generate, create EAN 13 image in VS .NET applications.
www.OnBarcode.com
The Fundamental Theorem of Formatting is that good visual layout shows the logical structure of a program.
Print UPC - 13 In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create EAN-13 image in .NET framework applications.
www.OnBarcode.com
Printing UPC-A In C#.NET
Using Barcode generator for VS .NET Control to generate, create UPC-A Supplement 2 image in Visual Studio .NET applications.
www.OnBarcode.com
de Complete
Matrix Barcode Encoder In Visual C#.NET
Using Barcode encoder for .NET framework Control to generate, create 2D Barcode image in VS .NET applications.
www.OnBarcode.com
ECC200 Printer In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create ECC200 image in .NET framework applications.
www.OnBarcode.com
31. Layout and Style
EAN 13 Generation In Visual C#.NET
Using Barcode creation for Visual Studio .NET Control to generate, create UPC - 13 image in .NET applications.
www.OnBarcode.com
GS1 - 12 Maker In Visual C#.NET
Using Barcode creator for Visual Studio .NET Control to generate, create UPC - E0 image in .NET framework applications.
www.OnBarcode.com
Page 5
UCC - 12 Printer In Java
Using Barcode creator for BIRT Control to generate, create UPC Symbol image in BIRT reports applications.
www.OnBarcode.com
UPC Symbol Generator In None
Using Barcode generator for Microsoft Word Control to generate, create UCC - 12 image in Office Word applications.
www.OnBarcode.com
5 KEY POINT
UPC Code Maker In Java
Using Barcode maker for Java Control to generate, create UPC A image in Java applications.
www.OnBarcode.com
Generate EAN-13 Supplement 5 In None
Using Barcode creation for Online Control to generate, create GS1 - 13 image in Online applications.
www.OnBarcode.com
Making the code look pretty is worth something, but it s worth less than showing the code s structure. If one technique shows the structure better and another looks better, use the one that shows the structure better. This chapter presents numerous examples of formatting styles that look good but misrepresent the code s logical organization. In practice, prioritizing logical representation usually doesn t create ugly code unless the logic of the code is ugly. Techniques that make good code look good and bad code look bad are more useful than techniques that make all code look good.
Print ECC200 In None
Using Barcode drawer for Software Control to generate, create Data Matrix image in Software applications.
www.OnBarcode.com
Making Denso QR Bar Code In .NET Framework
Using Barcode encoder for VS .NET Control to generate, create QR image in .NET applications.
www.OnBarcode.com
Any fool can write code that a computer can understand. Good programmers write code that humans can understand. Martin Fowler
Encode UCC.EAN - 128 In VS .NET
Using Barcode printer for Reporting Service Control to generate, create EAN128 image in Reporting Service applications.
www.OnBarcode.com
DataMatrix Scanner In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Human and Computer Interpretations of a Program
Layout is a useful clue to the structure of a program. Whereas the computer might care exclusively about braces or begin and end, a human reader is apt to draw clues from the visual presentation of the code. Consider the code fragment in Listing 31-4, in which the indentation scheme makes it look to a human as if three statements are executed each time the loop is executed.
F31xx01
Figure 31-1. Source-code formatting that exploits typographic features. Listing 31-4. Java example of layout that tells different stories to humans and computers.
// swap left and right elements for whole array for ( i = 0; i < MAX_ELEMENTS; i++ ) leftElement = left[ i ]; left[ i ] right[ i ] = right[ i ]; = leftElement;
If the code has no enclosing braces, the compiler will execute the first statement MAX_ELEMENTS times and the second and third statements one time each. The indentation makes it clear to you and me that the author of the code wanted all three statements to be executed together and intended to put braces around them. That won t be clear to the compiler. Listing 31-5 is another example:
Listing 31-5. Another Java example of layout that tells different stories to humans and computers.
x = 3+4 * 2+7;
A human reader of this code would be inclined to interpret the statement to mean that x is assigned the value (3+4) * (2+7), or 63. The computer will ignore the white space and obey the rules of precedence, interpreting the expression as 3 + (4*2) + 7, or 18. The point is that a good layout scheme would make the visual
de Complete
31. Layout and Style
Page 6
structure of a program match the logical structure, or tell the same story to the human that it tells to the computer.
How Much Is Good Layout Worth
Our studies support the claim that knowledge of programming plans and rules of programming discourse can have a significant impact on program comprehension. In their book called [The] Elements of [Programming] Style, Kernighan and Plauger also identify what we would call discourse rules. Our empirical results put teeth into these rules: It is not merely a matter of aesthetics that programs should be written in a particular style. Rather there is a psychological basis for writing programs in a conventional manner: programmers have strong expectations that other programmers will follow these discourse rules. If the rules are violated, then the utility afforded by the expectations that programmers have built up over time is effectively nullified. The results from the experiments with novice and advanced student programmers and with professional programmers described in this paper provide clear support for these claims. Elliot Soloway and Kate Ehrlich
Goo d layout is one key to readability. For details on the value of readability, see Section 34.3, Write Programs for People First, Computers Second.
Copyright © OnBarcode.com . All rights reserved.