c# code to generate barcode Note in Visual C#.NET

Painting Denso QR Bar Code in Visual C#.NET Note

Note
Making QR Code In Visual C#
Using Barcode creation for .NET Control to generate, create Quick Response Code image in .NET applications.
www.OnBarcode.com
QR Code ISO/IEC18004 Decoder In Visual C#.NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
load requires a full filename, including the .rb suffix, whereas require assumes the .rb suffix.
Drawing Data Matrix 2d Barcode In C#
Using Barcode creator for VS .NET Control to generate, create DataMatrix image in Visual Studio .NET applications.
www.OnBarcode.com
Print 2D In C#
Using Barcode creator for VS .NET Control to generate, create 2D image in VS .NET applications.
www.OnBarcode.com
The output is the same, but let s try a different example. Put this in a.rb: puts "Hello from a.rb" And put this in a file called b.rb: require 'a' puts "Hello from b.rb" require 'a' puts "Hello again from b.rb" Run with ruby b.rb to get the result:
Create UCC.EAN - 128 In Visual C#.NET
Using Barcode printer for Visual Studio .NET Control to generate, create UCC-128 image in VS .NET applications.
www.OnBarcode.com
Print Code 39 In Visual C#
Using Barcode generator for VS .NET Control to generate, create Code 39 Full ASCII image in VS .NET applications.
www.OnBarcode.com
Download at
Paint Code 128 Code Set B In C#.NET
Using Barcode creation for .NET framework Control to generate, create Code 128C image in VS .NET applications.
www.OnBarcode.com
Generating Identcode In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create Identcode image in .NET framework applications.
www.OnBarcode.com
C h a p t e r 7 p r O Je C t S a N D LI B r a r I e S
QR Creation In None
Using Barcode generator for Font Control to generate, create QR image in Font applications.
www.OnBarcode.com
QR Code Drawer In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
www.OnBarcode.com
Hello from a.rb Hello from b.rb Hello again from b.rb In this example, the a.rb file is included only once. It s included on line 1, and Hello from a.rb gets printed to the screen, but then when it s included again on line 3 of b.rb, nothing occurs. In contrast, consider this code: load puts load puts Hello Hello Hello Hello 'a.rb' "Hello from b.rb" 'a.rb' "Hello again from b.rb" from a.rb from b.rb from a.rb again from b.rb
Printing Code 39 Full ASCII In Java
Using Barcode printer for Java Control to generate, create USS Code 39 image in Java applications.
www.OnBarcode.com
Data Matrix ECC200 Scanner In Visual Studio .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
With load, the code is loaded and reprocessed anew each time you use the load method. require, on the other hand, processes external code only once.
ECC200 Printer In None
Using Barcode maker for Office Excel Control to generate, create DataMatrix image in Microsoft Excel applications.
www.OnBarcode.com
GTIN - 128 Drawer In Java
Using Barcode drawer for Android Control to generate, create EAN / UCC - 13 image in Android applications.
www.OnBarcode.com
Note Ruby programmers nearly always use require rather than load. The effects of load are useful only if the code in the external file has changed or if it contains active code that will be executed immediately. However, a good programmer will avoid the latter situation, and external files will only contain classes and modules that will, generally, rarely change.
Code 128B Recognizer In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Generate EAN-13 In None
Using Barcode creator for Online Control to generate, create UPC - 13 image in Online applications.
www.OnBarcode.com
Inclusions from Other Directories
Paint Code 128B In Objective-C
Using Barcode creation for iPad Control to generate, create Code 128 Code Set C image in iPad applications.
www.OnBarcode.com
QR Code JIS X 0510 Recognizer In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Both load and require can take local or absolute filenames. For example, require 'a' first looks for a.rb in the current directory, and then iterates through a multitude of other directories on your hard drive looking for a.rb. By default, these other directories are the various directories where Ruby stores its own files and libraries, although you can override this, if necessary. Ruby stores the list of directories to search for included files in a special variable called $: (or, if you prefer, $LOAD_PATH). You can see what $: contains by default, using irb: $:.each { |d| puts d } /usr/local/lib/ruby/site_ruby/1.8 /usr/local/lib/ruby/site_ruby/1.8/i686-darwin8.8.1 /usr/local/lib/ruby/site_ruby /usr/local/lib/ruby/1.8 /usr/local/lib/ruby/1.8/i686-darwin8.8.1 .
UCC-128 Creation In Java
Using Barcode printer for BIRT reports Control to generate, create EAN 128 image in Eclipse BIRT applications.
www.OnBarcode.com
Matrix Barcode Generation In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create 2D image in Visual Studio .NET applications.
www.OnBarcode.com
Download at
Ch apt er 7 p rOJ eC tS a ND L IB r a r IeS
Note This result is what appears on my machine, running Mac OS X. The list of directories will probably
differ significantly on your machine, particularly if you re using Windows, where the path layout will be entirely different, with the drive letter at the start and backslashes instead of forward slashes.
If you want to add extra directories to this, it s simple: $:.push '/your/directory/here' require 'yourfile' $: is an array, so you can push extra items to it or use unshift to add an element to the start of the list (if you want your directory to be searched before the default Ruby ones useful if you want to override Ruby s standard libraries).
Note Ruby keeps track of the files include has processed by using the name used to access them. If you have two paths pointing to the same file, and include the same file but by using two unique, full filenames, Ruby will duly load the same file twice.
Logic and Including Code
require and load both act like normal code in Ruby programs. You can put them at any point in your Ruby code and they ll behave as if they were processed at that point. For example: $debug_mode = 0 require $debug_mode == 0 "normal-classes" : "debug-classes" It s an obscure example, but it checks if the global variable $debug_mode is set to 0. If it is, it requires normal-classes.rb, and if not, debug-classes.rb. This gives you the power to include a different source file dependent on the value of a variable, ideal for situations where your application has regular and debug modes. You could even write an application that works perfectly, but then use a different require to include a whole different set of files that have new or experimental functionality. A commonly used shortcut uses arrays to quickly load a collection of libraries at once. For example: %w{file1 file2 file3 file4 file5}.each { |l| require l } This loads five different external files or libraries with just two lines of code. However, some coders are not keen on this style, as it can make the code harder to read, even if it s more efficient.
Copyright © OnBarcode.com . All rights reserved.