[Haskell-cafe] Confused about Cyclic struture

[Dinh Tien Tuan Anh]

  So is sharing already implemented in Haskell ?

Do i have to use "where" clause to implement the sharing ?

Thanks a lot for your help
Cheers

>
>To understand cyclic structures it is useful to think of "graph
>reduction", because these graphs allow us to conveniently represent
>sharing between objects. Cycles are simply "self-sharing".
>

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