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[Coq-Club] Explanation of Identity Coercions?


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  • From: Jason Gross <jasongross9 AT gmail.com>
  • To: coq-club <coq-club AT inria.fr>
  • Subject: [Coq-Club] Explanation of Identity Coercions?
  • Date: Fri, 16 Aug 2013 19:43:21 -0400

Hi,
Can someone explain to me how [Identity Coercion]s are used?  I can declare one easily enough, but I cannot think of a use-case.  That is, I cannot find a statement that will typecheck/run when I have declared a constant as an identity coercion, but which will fail if I have defined that constant, but not declared it as an identity coercion.  Can someone show me such a statement, or else explain to me what [Identity Coercion] is supposed to do if no such statement exists?

Thanks,
Jason



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