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by papercrane 3533 days ago
The video I linked to above talks about the restrictions (8m20s) placed on value types:

  * They have no identity.
  * Because they have no identity == comparisons is based on their data.
  * They cannot have super classes or sub classes (they can implement interfaces though.)
  * They are immutable.
  * They cannot be null.
https://www.youtube.com/watch?v=Tc9vs_HFHVo&list=PLX8CzqL3Ar...