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Solution: Social Media Dashboard

Understand how to manipulate Dart collections such as lists, sets, and maps by working through a social media dashboard solution. Learn to add elements, merge sets without duplicates, and retrieve map values, gaining practical experience in efficient data management.

We'll cover the following...
Dart
void main() {
final recentViews = [120, 200, 150];
final currentTags = <String>{'#dart', '#coding'};
final newTags = <String>{'#flutter', '#dart'};
final userProfile = <String, String>{
'handle': '@dart_dev',
'status': 'online'
};
recentViews.add(300);
print(recentViews.length);
final combinedTags = currentTags.union(newTags);
print(combinedTags);
final handle = userProfile['handle'];
print(handle);
}

Solution explanation

In the main.dart file:

  • Line 10: We use the add() method on our ...