Method Before

util/generic/strbuf.h:327–330

    }

    Y_PURE_FUNCTION inline TdSelf Before(TCharType c) const noexcept {
        TdSelf l, r;
        return TrySplit(c, l, r) ? l : *this;
    }

    Y_PURE_FUNCTION inline TdSelf RAfter(TCharType c) const noexcept {
        TdSelf l, r;