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    Potential pitfalls to avoid when passing around async lambdas

    February 8, 2012 Feb 8, 2012 02/8/12

    One of the really useful capabilities of the new async methods feature in C# and Visual Basic is the ability to write async lambdas and anonymous methods (from here on in this post, I’ll refer to both of these as async lambdas, since the discussion applies equally to both).  This allows you to easily get a delegate to represent an ...

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    .NET 4.5 Async

    .NET Parallel Programming

    When “ExecuteSynchronously” doesn’t execute synchronously

    February 7, 2012 Feb 7, 2012 02/7/12

    When creating a task continuation with ContinueWith, developers have the opportunity to provide a TaskContinuationOptions enum value, which could include the TaskContinuationOptions.ExecuteSynchronously flag.  ExecuteSynchronously is a request for an optimization to run the continuation task on the same thread that completed the ...

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    .NET 4 .NET 4.5

    .NET Parallel Programming

    Know Thine Implicit Allocations

    February 3, 2012 Feb 3, 2012 02/3/12

    For .NET 4.5, we’ve invested quite a bit of effort into performance, and in particular for the Task Parallel Library (Joe Hoag wrote a good paper covering some of these improvements).  We focused such effort on TPL because it is a core component used in async programming and at a foundational level for many libraries and ...

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    .NET 4 .NET 4.5

    .NET Parallel Programming

    Updated Async CTP

    November 1, 2011 Nov 1, 2011 11/1/11

    In April, we released the Async CTP Refresh, and since then we've seen fantastic adoption of the technology.  We've also seen the technology landscape evolve.  Windows Phone 7.5, aka "Mango", was released.  Silverlight 5 has had both a Beta and an RC release.  And there have been multiple patches to Visual Studio and the ....

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    .NET 4 Async

    .NET Parallel Programming

    When at last you await

    October 24, 2011 Oct 24, 2011 10/24/11

    When you start using async methods heavily, you’ll likely see a particular pattern of composition pop up from time to time.  Its structure is typically either of the form: async Task FooAsync() {     … // some initialization code without awaits      await BarAsync(&hellip...

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    .NET 4.5 Async

    .NET Parallel Programming

    Implementing a SynchronizationContext.SendAsync method

    January 20, 2012 Jan 20, 2012 01/20/12

    I recently saw two unrelated questions, the answers to which combine to form a potentially useful code snippet.The first question was about SynchronizationContext.  SynchronizationContext provides a Post method, which asynchronously schedules the supplied delegate and object state to be executed according to the SynchronizationContext&...

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    .NET 4 .NET 4.5

    .NET Parallel Programming

    Awaiting Socket Operations

    December 15, 2011 Dec 15, 2011 12/15/11

    The System.Net.Sockets.Socket class in .NET exposes multiple sets of asynchronous methods that perform the same basic operations but that are exposed with different patterns.The first set follows the APM pattern, where for a synchronous method like Receive, the BeginReceive and EndReceive methods are exposed.  If you want to be able to &...

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    .NET 4.5 Async

    .NET Parallel Programming