Really? I have no experience with Haskell's internals, but self-referential objects are fairly common in Haskell thanks to its non-strictness. The simplest one

Really? I have no experience with Haskell's internals, but self-referential objects are fairly common in Haskell thanks to its non-strictness. The simplest one is probably the list with one element repeated forever. ones = 1:ones