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atomic_list_concat/3 (SWI compatibility).

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Vítor Santos Costa 2010-06-17 00:28:03 +01:00
parent 57ca6f6406
commit c7b5cc235e
1 changed files with 9 additions and 0 deletions
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9
pl/utils.yap
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@ -352,6 +352,15 @@ atom_concat(X,Y,At) :-
atomic_list_concat(L,At) :-
atomic_concat(L, At).
atomic_list_concat(L, El, At) :-
'$add_els'(L,El,LEl),
atomic_concat(LEl, At).
'$add_els'([A,B|L],El,[A,El|NL]) :- !,
'$add_els'([B|L],El,NL).
'$add_els'(L,_,L).
atomic_concat(X,Y,At) :-
(
nonvar(X), nonvar(Y)