How to update a list item using its index in Dart
Overview
To replace the value of a single item with a different value, we can use that item’s index and assign it a new value.
Syntax
list_name[index] = newValue;
list_name is the name of the list.
Code
Let’s assume that we have a list that is named numbers.
List numbers = [20, 30, 40, 50, 60, 70];
We can use the code given below to change the value from 20 to 40 by using the index of 20.
void main() {//Creating listList numbers = [20, 30, 40, 50, 60, 70];print('The list items before updating: ${numbers}');numbers[0] = 40 ; // The index of 20 is 0//display resultprint('The list items after updating: ${numbers}');}