[Haskell-cafe] Fold that quits early?
wren ng thornton
wren at freegeek.org
Sat Jan 24 22:26:52 EST 2009
On Saturday 24 January 2009 11:39:13 am Andrew Wagner wrote:
> This is almost a fold, but seemingly not quite? I know I've seem some
> of folds that potentially "quit" early. but not sure where I saw that,
> if it fits.
Were thinking of Elgot algebras
<http://comonad.com/reader/2008/elgot-coalgebras/> ? That's a
hylomorphism that cheats, rather than a catamorphism (aka "fold"), but
it sounds like what you want.
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