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petermarks/record.idr

Created July 4, 2018 10:06
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Proving record field get and set are an identity for the field value
Raw
record.idr
record R where
constructor MkR
foo : Nat
foo_identity : (foo (set_foo x r)) = x
foo_identity {x} {r} with (foo (set_foo x r))
foo_identity {x} | y = ?rhs
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