MSDN Magazine February 2015

Cross-Platform: Share UI Code Across Mobile Platforms with Xamarin.Forms

The head of the Xamarin.Forms project shows how it provides access to all the native power of the major mobile platforms, as well as all the goodness of a simplified API for those things that dont need the complex native APIs. Jason Smith

C#: Adding a Code Fix to Your Roslyn Analyzer

In the second part of Alex Turner's exploration of live code analyzers in the .NET Compiler Platform, he shows how to add a code fix provider to clean up errors found by the regex diagnostic analyzer presented in part 1. Alex Turner

Microsoft Azure: The Rise of Event Stream-Oriented Systems

With the rise in prominence of event data streams, managing and processing those streams becomes more essential. The new Azure Event Hubs helps you predict and parse data streams. Christopher Bennage

Visual Studio 2015: Build Better Software with Smart Unit Tests

Smart Unit Tests lets you specify the intended behavior of software in terms of its source code, and uses automated white-box code analysis in conjunction with a constraint solver to generate and maintain a compact suite of relevant tests with high coverage for your .NET code. Pratap Lakshman

Compilers: What Every Programmer Should Know About Compiler Optimizations

Hadi Brais introduces the sophisticated optimization capabilities of the Visual C++ compiler, which enable programmers to write understandable, maintainable code without compromising performance. Hadi Brais

.NET Framework: Building an Enterprise Search for .NET

Big data warehouses allow companies to store huge amounts of information, but the challenge is how to retrieve just a small and specific piece of it. With Elasticsearch, things get easier. Damian Zapart

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Editor's Note: Analyze This The new .NET Compiler Platform (aka "Roslyn") technology that is part of the Visual Studio 2015 Preview is already doing some pretty cool things. This month, we dive into Live Code Analyzers. Michael Desmond	Cutting Edge: Lightweight Client-Side Device Detection WURFL.js is a lightweight device description repository that can improve the user experience in client-side intensive Web applications running on mobile and desktop browsers. Dino Esposito	Windows with C++: COM Smart Pointers Revisited it’s time to apply some of the modern C++ offered by Visual C++ 2015 to the design of a new smart pointer for COM interfaces, as Kenny Kerr explains. Kenny Kerr
Test Run: L1 and L2 Regularization for Machine Learning James McCaffrey looks at how regularization can help to reduce overfitting, a common result of machine learning that undermines the predictive accuracy of the model. James McCaffrey	The Working Programmer: Rise of Roslyn, Part 2: Writing Diagnostics Dig into writing diagnostics as Ted Neward and Joe Hummel show how to use the open source .NET Compiler Platform (formerly known as "Roslyn") to write language tools when developing for the platform. Ted Neward, Joe Hummel	Modern Apps: Implement Search in Windows Store and Windows Phone Store Apps Search is arguably the most important feature in any app these days. If you want to make your app popular and easy to use, you had better add a search function. Rachel Appel
Don't Get Me Started: 5 Years Down the Road Has it been five years already? David Platt looks back at half a decade as the back page columnist at MSDN Magazine. David Platt