/**
* Whether a column exists.
* @param int|string $column
* @return bool
*/
public function hasValue($column) : bool
{
return $this->schema->hasHeader($column) && isset($this->values[$this->schema->getHeader($column)->getIndex()]);
}
public static final function excelSchema() : CSVSchema
{
return CSVSchema::create()->withDelimiter(',')->withEnclosure('"')->withEscape("\\")->withSeparator("\r\n");
}