title: Null-conditional Operators Compatibility
body: <p>The <a href="https://msdn.microsoft.com/en-us/library/dn986595.aspx" rel="nofollow">Null-conditional Operators</a> has supposedly been introduced in C# 6.0 (or .NET Framework 4.6). However, my project uses the 4.5.2 version of the framework (C# 5.0). While I'm using Visual Studio 2015, the IDE seems to understand the new notation and compiles/works properly. However, I'm confused about whether the project would still work upon publish. My development machine has 4.6 installed but the production server might not.</p>
  
  <p>In other words, is the Null-conditional Operators really compatible with 4.5.2 or am I missing something?</p>