count static method
counts the occurrences of values in the list
Example:
count(list) // return no of all occurrrnces
Implementation
static Map<dynamic, dynamic>? count(List<dynamic> list) {
Map<dynamic, dynamic>? _map = <dynamic, dynamic>{};
list.forEach(
(dynamic x) => _map[x] = _map.containsKey(x) ? _map[x] + 1 : 1);
return _map;
}