Apologies -- I was running a wrong snippet. Mark is working correctly, I'll have another look...
On 10 October 2010 09:15, Stephen Tetley <stephen.tet...@gmail.com> wrote: > Isn't mark is always increasing the size of the board? - I haven't run > the code but I if this is the behaviour you want 'mark' is probably > not a good name (I'd expect mark to be returning something the same > size but with marked elements). > > In _mark_ the before and after are always splits, so the concatenation > on the first line of the definition of _mark_ is taking the splits and > adding more between them thus expanding the board. > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe