Using data to bound codata. Intuitively, finding the least fixed-point under f of a greatest fixed-point under g.
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The code of mine that
@djspiewak is refering to is here: https://github.com/milessabin/shapeless/blob/master/examples/src/main/scala/shapeless/examples/unfold.scala#L57-L71 … 1/2 -
I thought I was gaming the Scala type checker's divergence rules and only later learned that it's a common technique in Coq, Agda etc. 2/2
End of conversation
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