By Christian Gross
The focal point of this booklet is to give object-oriented programming utilizing .NET styles. styles are at present being mostly taught in line with the belief that the reader knows item orientated programming thoughts. This has led to one other hole because the recommendations taught frequently conflict with the thoughts utilized by the reader. The development notion is usually summary and infrequently fails to make the bounce from conception to useful. the aim of this e-book is to mend the object-oriented and development programming drawback via "mixing" the two—that is, educating object-oriented recommendations utilizing styles. If a second is taken to consider the matter, this can be a very logical process because it promotes a solutions-based method. The suggestions are "how to create an object," "how to outline the place one desires to go," "how may perhaps one outline the implementation", and so forth. This booklet is exclusive in that it really is modeled after the author’s profitable conversing fabric that applies styles in a really pragmatic and functional demeanour. The fabrics might be equipped utilizing projects, provided utilizing styles, and illustrated utilizing improvement difficulties and strategies. This ebook will reference open resource tasks that illustrate many of the improvement difficulties and ideas. the point of interest is to exploit sensible options that builders stumble upon daily, reminiscent of database manipulations, GUI improvement, or heart tier part improvement. there'll be no concentrate on particular applied sciences; for instance, to demonstrate database manipulations, Microsoft SQL Server might be used, however the publication will concentrate on utilizing a general database and the SQL programming language.
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Extra info for Foundations of Object-Oriented Programming Using .NET 2.0 Patterns (Foundations)
Example text
If you have a logical trail, it’s possible to figure out what went wrong. This section illustrates how to generate a trace log. TestExamples) Looking at the output, there are a number of start and end identifiers. Each of the identifiers represents a block of functionality. The source code that generates the block is associated with the methods TestExamples, BetterExamples, and BadExamples. Based on the nesting, the method TestExamples calls the methods BetterExamples and BadExamples. Output, it follows the nested offset of the parent block.
For example, you can log an important test for success or failure. Using tracing for other situations than those mentioned is also acceptable, if the tracing helps the developer understand the application’s execution path. Any further tracing will confuse the reader of the generated log output. fm Page 35 Thursday, August 25, 2005 5:51 AM CHAPTER 2 ■ LOGGING, ERRORS, AND TEST-DRIVEN DEVELOPMENT Developers also require the ability to add tracing method calls on a temporary basis. Consider the context of a developer running an extensive test framework.
Polymorphic code allows the developer to create general code that manipulates specific types. From the previous example, this means that general code would manipulate the Animal type, but call the specific types Dog or Human. NET runtime go beyond regular polymorphic code. They make it possible to develop polymorphic code that’s time proof—or at least mostly time proof. The difficulty is that if a later version implements newer functionality, then older consumers will receive the newer functionality.