Add new element to list dart

In Dart, you can add a new element to a list using the add method. Here's an example:

List<String> mylist = ['apple', 'banana', 'cherry'];
mylist.add('date');
print(mylist); // Output: [apple, banana, cherry, date]

Alternatively, you can use the addAll method to add multiple elements to the list:

List<String> mylist = ['apple', 'banana', 'cherry'];
mylist.addAll(['date', 'elderberry', 'fig']);
print(mylist); // Output: [apple, banana, cherry, date, elderberry, fig]

You can also use the insert method to add an element at a specific position in the list:

List<String> mylist = ['apple', 'banana', 'cherry'];
mylist.insert(1, 'date');
print(mylist); // Output: [apple, date, banana, cherry]

Note that the insert method shifts all elements to the right of the insertion point to make room for the new element.

You can also use the addAt method to add an element at a specific position in the list:

List<String> mylist = ['apple', 'banana', 'cherry'];
mylist.addAt(1, 'date');
print(mylist); // Output: [apple, date, banana, cherry]

Note that the addAt method is only available in Dart 2.3 and later. In earlier versions of Dart, you can use the insert method instead.