properly trims and formats a csv string , removing extra space or blank entries . eg : `` wer , wer , , wer '' would turn into `` wer , wer , wer '' . concode_field_sep Joiner TO_CSV concode_elem_sep Splitter UN_CSV concode_field_sep String listToCsv concode_elem_sep List<String> subtractList concode_elem_sep List<String> csvToList concode_elem_sep String trimString
String function ( String arg0 ) { return listToCsv ( csvToList ( arg0 ) ) ; }