CSV Parse Lite - Dart Programming

A tiny CSV reader is just split plus a loop. The first row is the header, the rest are data rows, and a collection-for zips header names to fields to build one map per row.

Program

Play the program to parse a 3-line CSV into records and summarize them.

csv_parse_lite.dart

void main() {
  var csv = 'name,score\nAda,3\nLin,5';
  var lines = csv.split('\n');
  var headers = lines.first.split(',');
  var rows = <Map<String, String>>[];
  for (var line in lines.skip(1)) {
    var fields = line.split(',');
    var record = {
      for (var i = 0; i < headers.length; i++)
        headers[i]: fields[i],
    };
    rows.add(record);
  }
  var summary = rows
      .map((r) => '${r['name']}=${r['score']}')
      .join('|');
  print(summary);
}

split lines `csv.split('\n')` yields one string per line; the first is the header row.

skip header `lines.skip(1)` advances past the header so the loop sees only data rows.

zip to map A collection-`for` over `headers` pairs each header name with the matching field.