Multiple min and max for library(aggregate)?

Help!
5

Something like that can work. As suggested, I’d use a different template. Also the way you collect will result in quadratic behavior as nb_setarg/3 copies the argument that gets bigger and bigger. That is nasty to avoid. It is doable though. I once write a findall/3 alternative using this technique call findfew/3 as it is faster if the goal only a few solutions, but gets slower if there are many. Here is the code:

:- meta_predicate
	find_few(?, 0, -).

find_few(T, G, L) :-
	L0 = [dummy|_],
	Result = list(L0),
	(   call(G),
	    duplicate_term(T, T2),
	    NewLastCell = [T2|_],
	    arg(1, Result, LastCell),
	    nb_linkarg(2, LastCell, NewLastCell),
	    nb_linkarg(1, Result, NewLastCell),
	    fail
	;   arg(1, Result, [_]),
	    L0 = [_|L]
	).
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