public function joinString($join=null, $glue=", ")
    {
        $join = LambdaUtils::toSelectCallable($join);
        $temp = $this->select($join)->toArray();
        return implode($glue, $temp);
    }
public function joinString($join=null, $glue=", ")
    {
        $join = LambdaUtils::toSelectCallable($join);
        $temp = $this->select($join)->toArray();
        return implode($glue, $temp);
    }
public function joinString ( $ join = null , $ glue = ", " ) { $ join = LambdaUtils :: toSelectCallable ( $ join ) ; $ temp = $ this -> select ( $ join ) -> toArray ( ) ; return implode ( $ glue , $ temp ) ; }
Join values from expression to one string
@param callable|string|null $join
@param string $glue
@return string
Join values from expression to one string