.NET 4.5 Parallel Extensions Cookbook by Bryan Freeman

By Bryan Freeman

Create multithreaded functions utilizing .NET Framework 4.5
Get brought to .NET 4.5 parallel extensions and familiarized with .NET parallel loops
Use new information buildings brought by way of .NET Framework 4.5 to simplify advanced synchronisation problems
Practical recipes on every little thing it is very important create task-based parallel programs
.NET parallel extensions brings the facility of parallel and asynchronous programming to a wider developer viewers than ever prior to. This ebook will supply a developer without multithreaded improvement event the facility to jot down hugely scalable parallel purposes that benefit from glossy multicore processors.If you're an skilled .NET developer who desires to positioned parallel extensions to paintings on your purposes, this publication is for you.

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Extra resources for .NET 4.5 Parallel Extensions Cookbook

Example text

There are a couple of subtle but important concepts in here that will be explained later in the chapter. WriteLine("Task complete. Result); } } 6. Next, let's implement the body of our catch block. Message); } } 7. After the catch block, let's finish up by prompting the user to exit, and waiting on the user to hit Enter. ReadLine(); 8. In Visual Studio 2012, press F5 to run the project. You should see output as shown in the following screenshot: 31 Getting Started with Task Parallel Library How it works… All of this stuff has been pretty self-explanatory so far, but handling exceptions in task involves a couple of subtleties that need to be pointed out.

Generic; 3. In the Main method of the Program class, add a character array containing the basic punctuation marks. Split() to eliminate punctuation marks. Also add a constant string for the WebClients user-agent task. 0)"; 4. For this recipe, let's create a new Dictionary instance that can hold our book titles and URLs. txt"} }; 5. This time we will be creating anonymous tasks in a loop. We still would like to wait for the tasks to complete before prompting the user to exit the program. WaitAll() and wait for completion.

Start a new project using the C# Console Application project template and assign WordCount6 as the Solution name. 2. Tasks; 3. For this recipe, we will just need a single task. The task will be very similar to our other word count tasks, but in this one we will simulate a problem with the System. WebException. txt"); var ex = new WebException("Unable to download book contents"); throw ex; return 0; }); 4. Just below the Task, let's put in our try/catch blocks as shown in the following code snippet.

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