The following snippet works
(fresh [?row ?col]
(fd/+ row 1 ?row)
(fd/+ col 1 ?col)
(membero {:row ?row :col ?col} data)))] ; check
existence of {:row (?row + 1) :col (?col + 1)}
But I'm not sure if this isn't to verbose.
The question is: Is it really neccessary to bind to row and col or ist
there a shorter way ?
Regards
Roger
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