dt_lite_iso8601 8368 ext/date/date_core.c return dt_lite_iso8601(argc, argv, self); dt_lite_iso8601 9591 ext/date/date_core.c rb_define_method(cDateTime, "iso8601", dt_lite_iso8601, -1); dt_lite_iso8601 9592 ext/date/date_core.c rb_define_method(cDateTime, "xmlschema", dt_lite_iso8601, -1);