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GServer: A Ruby library that makes developing network servers and services easy. It handles the thread and connection management and allows servers to be created by simply subclassing the GServer class. Daemon: A process that runs continually and silently in the background on a machine and isn t run directly by a user. Daemon processes are often used to run servers, as they run consistently without any interaction requirements on the local machine. A process that is then turned into a daemon is said to be daemonized.

Figure 6-6: Sequential control flow diagrams for ConvertToPositiveIntValue function. In the CFD, the statements int.Parse() and (int)Convert.ToUInt32() are represented by the single node A1 because it is not important to differentiate between the two statements for the purpose of block testing. However, testers must also realize that these two process statements set up specific input minimum and maximum boundary conditions for the number parameter. The int.Parse() function converts a string representation of a whole number to a signed integer value within the range of -2,147,483,648 to 2,147,483,647. The Convert. ToUInt32 function converts a System.String representation of a whole number to an integer value between 0 and 4,294,967,296. Although we require only one block test to evaluate control flow through the overflow exception handler, the professional tester also realizes that additional boundary testing is required for adequate evaluation of this function.

The site map file, if any, is parsed and transformed into a SiteMap object. The SiteMap object is globally accessible through a bunch of static methods. The XML file shown above is made up of a hierarchy of <siteMapNode> elements, each containing a title and a url attribute, and an optional description attribute. The former returns a friendly name for the element; the latter indicates the URL to jump to when that portion of the site is selected. You can also specify the contents of a site map node by referencing an external file, as the following code snippet demonstrates:

private static AsyncCallback SyncContextCallback(AsyncCallback callback) { // Capture the calling thread's SynchronizationContext-derived object SynchronizationContext sc = SynchronizationContext.Current; // If there is no SC, just return what was passed in if (sc == null) return callback; // Return a delegate that, when invoked, posts to the captured SC a method that // calls the original AsyncCallback passing it the IAsyncResult argument return asyncResult => sc.Post(result => callback((IAsyncResult)result), asyncResult); }

Methods DateTime.FromFileTime() Static method that returns a DateTime instance from a file system timestamp.

object_name MSSQL$S2:Buffer Manager MSSQL$S2:Buffer Manager counter_name Buffer cache hit ratio Buffer cache hit ratio base instance_name cntr_value cntr_type 634 649 537003264 1073939712

The next step is to alter the XML column from a well-formed state to a schema-validated one:

Figure 5-8 A huge array of charting options enables you to find just the right look for the data you want to display.

// Error: conflicts with AType<T> that has no constraints internal sealed class AType<T> where T : IComparable<T> {}

In this section, we ll step through a few examples to demonstrate the power of web resources when extending your Microsoft Dynamics CRM system. However, the coding specifics are beyond the scope of this book. Please consult the Microsoft Dynamics CRM SDK or alternate

MEF (which is now part of .NET Framework 4 and Silverlight 4) provides support for building extensible .NET applications by supporting dependency injection based component composition, and it provides other features that support modular application development. It allows an application to discover components at run time and then integrate those components into the application in a loosely-coupled way. MEF is a great extensibility and composition framework. It includes assembly and type discovery, type dependency resolution, dependency injection, and some assembly and .xap download capabilities. Prism enables you to take advantage of these MEF features, as well as the following: Associating module types to their .xap location Registering modules via XAML and code attributes for both WPF and Silverlight Registering modules via configuration files and directory scans (WPF only) Tracking state as the module is loaded Using custom declarative metadata for modules (MEF only) Both the Unity and MEF dependency injection containers work seamlessly with Prism.

To test the function, run the following query, which will give you a three-row histogram steps table:

You can also use the more generic fn_RegexReplace function to achive the same output, like so: SELECT dbo.fn_RegexReplace(tsql_code, N'([\s,(=<>!]( ![^\]]+[\]]))( :( :( :( # )( :([N]) ('')( :[^'']|'''')*(''))( # )|( :0x[\da-fA-F]*)( # )|( :[-+] ( :( :[\d]*\.[\d]*|[\d]+)( # )( :[eE] [\d]*)))( # )|( :[~] [-+] ( :[\d]+))( # ))( :[\s] [\+\-\*\/\%\&\|\^][\s] ) )+( # ))', N'$1$2$3#$4') AS sig, duration FROM dbo.Workload;