compare($master) > 0); assert($master->compare($develop) < 0); assert($develop->compare($boost_1_55_0) > 0); assert($boost_1_55_0->compare($develop) < 0); assert($boost_1_55_0->compare($boost_1_54_0) > 0); assert($boost_1_54_0->compare($boost_1_55_0) < 0); assert($boost_1_55_0->compare('boost_1_55_0') == 0); assert($boost_1_55_0->compare('boost_1_54_0') > 0); assert($boost_1_55_0->compare('boost_1_56_0') < 0); assert($develop->dir() == 'develop'); assert($master->dir() == 'master'); assert($boost_1_55_0->dir() == 'boost_1_55_0'); assert((string) $boost_1_55_0 == '1.55.0');