title: What does the portable class library actually solve?
body: <p>I was wondering, what does the PCL actually solve? If all it does is limit me to what types are cross-platform, then why didn't Microsoft just make this as a feature in a standard .NET library through the IDE?</p>
  
  <p>Basically, I can easily compile a .NET library containing some POCO objects and reference that DLL in my Silverlight, WPF, and Windows Store app without needing to recompile or having any issues. Is there any hard examples of code that works in the PCL that would not work in a standard .NET library?</p>
  
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  <p>Oh, and I know that obviously there are some things that would work in the standard .NET library, I'm not concerned about that... I guess my question is this:</p>
  
  <p>Is there any code that would compile in a Portable Class Library, that would not function correclty if that <b>exact same code</b> was in a .NET Library?</p>