Total Video Count Calculator: Summing up all videos across modules

total_video_count.dart

void main() {
  List<Map<String, dynamic>> sampleData = [
    {
      "module_id": "7",
      "module_title": "Introduction",
      "videos": [
        {"sn_no": 1, "sno": "01", "video_id": "1668"},
        {"sn_no": 2, "sno": "02", "video_id": "4"},
        {"sn_no": 3, "sno": "03", "video_id": "38"},
        {"sn_no": 4, "sno": "04", "video_id": "39"}
      ]
    },
    {
      "module_id": "24",
      "module_title": "Learning",
      "videos": [
        {"sn_no": 5, "sno": "05", "video_id": "37"},
        {"sn_no": 6, "sno": "06", "video_id": "36"},
        {"sn_no": 7, "sno": "07", "video_id": "35"},
      ]
    },
    {
      "module_id": "25",
      "videos": [
        {"sn_no": 8, "sno": "08", "video_id": "34"},
        {"sn_no": 9, "sno": "09", "video_id": "2"},
        {"sn_no": 10, "sno": "10", "video_id": "6"}
      ]
    }
  ];

  int totalVideosCount = 0; // Variable to store the total count of videos

  for (var module in sampleData) {
    if (module.containsKey("videos")) {
      totalVideosCount += (module["videos"] as List).length;
    }
  }

  print("Total videos count is: $totalVideosCount");
}

This Dart script calculates and prints the total number of videos from a list of modules, summing up the count of videos present in each module.

Outcome