End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

DBM.open

DBM.open(filename[, mode[, flags]]) → dbm

DBM.open(filename[, mode[, flags]]) {|dbm| block}

static VALUE
fdbm_s_open(int argc, VALUE *argv, VALUE klass)
{
    VALUE obj = fdbm_alloc(klass);

    if (NIL_P(fdbm_initialize(argc, argv, obj))) {
        return Qnil;
    }

    if (rb_block_given_p()) {
        return rb_ensure(rb_yield, obj, fdbm_close, obj);
    }

    return obj;
}

Open a dbm database and yields it if a block is given. See also DBM.new.