create new list from old list with where method in dar t code example
Example: get single element from list in dart
var firstList = [1,2,3,4,5,6]; print(firstList.firstWhere((i) => i < 4)); // 1 var sList = ['one', 'two', 'three', 'four']; print(sList.firstWhere((i) => i.length > 3)); // three