diff options
Diffstat (limited to 'lib.c')
-rw-r--r-- | lib.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -3785,24 +3785,27 @@ val lazy_flatcar(val tree) static val tuples_func(val n, val lcons) { - list_collect_decl (out, ptail); + seq_build_t bu; us_cons_bind (iter_in, fill, lcons); val iter = iter_in; val count; + seq_build_init(lit("tuples"), &bu, iter); + for (count = n; count != zero && iter_more(iter); count = minus(count, one), iter = iter_step(iter)) - ptail = list_collect(ptail, iter_item(iter)); + seq_add(&bu, iter_item(iter)); if (!missingp(fill)) for (; gt(count, zero); count = minus(count, one)) - ptail = list_collect(ptail, fill); + seq_add(&bu, fill); if (iter_more(iter)) us_rplacd(lcons, make_lazy_cons_car_cdr(us_lcons_fun(lcons), iter, fill)); else us_rplacd(lcons, nil); - us_rplaca(lcons, make_like(out, iter_in)); + + us_rplaca(lcons, seq_finish(&bu)); return nil; } |