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} @Override public int exec(Prog p) { Sink S = (Sink) getArg(0); Term X = getArg(1); if (0 == S.putElement(X)) { IO.errmes("error in putElement: " + X); } return 1; }
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@Override public int exec(Prog p) { Source from = (Source) getArg(0); Sink to = (Sink) getArg(1); for (;;) { Term X = from.getElement(); if (null == X) { to.stop(); break; } else { to.putElement(X); } } return 1; }
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} @Override public int exec(Prog p) { Sink s = (Sink) getArg(0); Term X = s.collect(); if (null == X) { X = Const.NO; } else