diff options
Diffstat (limited to 'numeric.c')
| -rw-r--r-- | numeric.c | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -1867,8 +1867,19 @@ num_step_scan_args(int argc, const VALUE *argv, VALUE *to, VALUE *step) argc = rb_scan_args(argc, argv, "02:", to, step, &hash); if (!NIL_P(hash)) { - *step = rb_hash_aref(hash, sym_by); - *to = rb_hash_aref(hash, sym_to); + ID keys[2]; + VALUE values[2]; + keys[0] = sym_to; + keys[1] = sym_by; + rb_get_kwargs(hash, keys, 0, 2, values); + if (values[0] != Qundef) { + if (argc > 0) rb_raise(rb_eArgError, "to is given twice"); + *to = values[0]; + } + if (values[1] != Qundef) { + if (argc > 1) rb_raise(rb_eArgError, "step is given twice"); + *step = values[1]; + } } else { /* compatibility */ |