92 lines
2.6 KiB
Prolog
92 lines
2.6 KiB
Prolog
:- module(lists, [member/2, select/3, append/3, memberchk/2,
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reverse/2, length/2, maplist/2, maplist/3,
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maplist/4, maplist/5, maplist/6, maplist/7,
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maplist/8, maplist/9]).
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length(Xs, N) :-
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var(N), !,
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'$skip_max_list'(M, -1, Xs, Xs0),
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( Xs0 == [] -> N = M
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; var(Xs0) -> length_addendum(Xs0, N, M)).
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length(Xs, N) :-
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integer(N),
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N >= 0, !,
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'$skip_max_list'(M, N, Xs, Xs0),
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( Xs0 == [] -> N = M
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; var(Xs0) -> R is N-M, length_rundown(Xs0, R)).
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length(_, N) :-
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integer(N), !,
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throw(error(domain_error(not_less_than_zero, N), length/2)).
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length(_, N) :-
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throw(error(type_error(integer, N), length/2)).
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length_addendum([], N, N).
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length_addendum([_|Xs], N, M) :-
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M1 is M + 1,
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length_addendum(Xs, N, M1).
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length_rundown(Xs, 0) :- !, Xs = [].
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length_rundown([_|Xs], N) :-
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N1 is N-1,
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length_rundown(Xs, N1).
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member(X, [X|_]).
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member(X, [_|Xs]) :- member(X, Xs).
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select(X, [X|Xs], Xs).
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select(X, [Y|Xs], [Y|Ys]) :- select(X, Xs, Ys).
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append([], R, R).
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append([X|L], R, [X|S]) :- append(L, R, S).
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memberchk(X, Xs) :- member(X, Xs), !.
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reverse(Xs, Ys) :-
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( nonvar(Xs) -> reverse(Xs, Ys, [], Xs)
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; reverse(Ys, Xs, [], Ys)
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).
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reverse([], [], YsRev, YsRev).
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reverse([X1|Xs], [Y1|Ys], YsPreludeRev, Xss) :-
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reverse(Xs, Ys, [Y1|YsPreludeRev], Xss).
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maplist(_, []).
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maplist(Cont1, [E1|E1s]) :-
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call(Cont1, E1),
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maplist(Cont1, E1s).
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maplist(_, [], []).
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maplist(Cont2, [E1|E1s], [E2|E2s]) :-
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call(Cont2, E1, E2),
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maplist(Cont2, E1s, E2s).
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maplist(_, [], [], []).
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maplist(Cont3, [E1|E1s], [E2|E2s], [E3|E3s]) :-
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call(Cont3, E1, E2, E3),
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maplist(Cont3, E1s, E2s, E3s).
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maplist(_, [], [], [], []).
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maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s]) :-
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call(Cont, E1, E2, E3, E4),
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maplist(Cont, E1s, E2s, E3s, E4s).
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maplist(_, [], [], [], [], []).
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maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s]) :-
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call(Cont, E1, E2, E3, E4, E5),
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maplist(Cont, E1s, E2s, E3s, E4s, E5s).
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maplist(_, [], [], [], [], [], []).
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maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s]) :-
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call(Cont, E1, E2, E3, E4, E5, E6),
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maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s).
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maplist(_, [], [], [], [], [], [], []).
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maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s], [E7|E7s]) :-
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call(Cont, E1, E2, E3, E4, E5, E6, E7),
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maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s, E7s).
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maplist(_, [], [], [], [], [], [], [], []).
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maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s], [E7|E7s], [E8|E8s]) :-
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call(Cont, E1, E2, E3, E4, E5, E6, E7),
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maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s, E7s, E8s).
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