public function join($strs = null) { return new self(s::join($this->value, XArray::unwrap($strs))); }
public function testJoin() { $this->eq(s::join(array('a', 'b', 'c')), 'abc'); $this->eq(s::join(' ', array('a', 'b', 'c')), 'a b c'); }
public function join($str = '') { return new XString(s::join(XString::unwrap($str), $this->value)); }