Hi all,
I'm working my way through the lecture notes to the "Finally Tagless"
course, available from:
http://okmij.org/ftp/tagless-final/course/index.html
As usual at every round of doing so, I think it's my 4th, I discover
something new, something that hadn't occurred to me previously.
This time it's a comment in the code of SerializeExt.hs
-- * Tie up the knot
fromTree = S.fix fromTreeExt -- One does use fix in real programs
-- Now we can see the real benefit of using fix in real programs.
-- The fixpoint combinator is NOT a mere curiosity
about the fix-point combinator.
I don't think I can deduce what he meant by that from the context alone,
could somebody please enlighten me? I'm refering to the benefit of using
the fix-point combinator in this particular scenario.
Günther
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