Can I use a “dynamic” keyword in a portable class library?

Question

I am creating a portable class library that aims to:

• .NET 4.5
• Windows Store apps.
• Windows Phone 7.5+
• Silverlight 5

Is it safe to use the keyword "dynamic" in this library?

Answer 1

Projects oriented to Windows Phone 7.5 cannot use “dynamic” - it lacks both types and runtime support. However, the above combination will work if you change Phone 7.5 to Phone 8