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view paper/src/AgdaProduct.agda @ 4:bf1f62556b81

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add while_test_init_imple
author soto
date Thu, 11 Feb 2021 17:03:31 +0900
parents 959f4b34d6f4
children
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data _×_ (A B : Set) : Set where
  <_,_> : A -> B -> A × B

fst : {A B : Set} -> A × B -> A
fst < a , _ > = a

snd : {A B : Set} -> A × B -> B
snd < _ , b > = b