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view final_main/src/AgdaInstance.agda @ 0:83f997abf3b5

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author e155702
date Thu, 14 Feb 2019 16:51:50 +0900
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_==Nat_ : Nat -> Nat -> Bool
zero    ==Nat zero    = true
(suc n) ==Nat zero    = false
zero    ==Nat (suc m) = false
(suc n) ==Nat (suc m) = n ==Nat m

instance
  natHas== : Eq Nat
  natHas== = record { _==_ = _==Nat_}