# File lib/faster_csv.rb, line 1442 def <<(row) # make sure headers have been assigned if header_row? and [Array, String].include? @use_headers.class parse_headers # won't read data for Array or String self << @headers if @write_headers end # Handle FasterCSV::Row objects and Hashes row = case row when self.class::Row then row.fields when Hash then @headers.map { |header| row[header] } else row end @headers = row if header_row? @lineno += 1 @io << row.map(&@quote).join(@col_sep) + @row_sep # quote and separate self # for chaining end