void main(){
// Creating list languages
List languages = new List();
// Adding items to the list
languages.add('Dart');
languages.add('Python');
languages.add('Java');
languages.add('C#');
languages.add('C++');
// Print result
print(languages);
// iterate through the list
// Returns the first item whose length is greater than 3
var val = languages.firstWhere((item) => item.length > 3, orElse: () => null);
// if val is null, then the if statement is executed
if ( null == val ) {
print('Language not found.');
}
// Display result
print(val);
// Creating another list
List<String> fruits = ['Apple', 'Lemon', 'Avocado', 'Orange'];
// iterate through the list
// Returns the first item that contains PineApple
// the orElse() is invoke if not found
var fav = fruits.firstWhere((item) => item.contains('PineApple'),
orElse: () => 'Fruit not available');
print(fav);
}Output
[Dart, Python, Java, C#, C++]
Dart
Fruit not available
I’m Abhishek, a DevOps, SRE, DevSecOps, and Cloud expert with a passion for sharing knowledge and real-world experiences. I’ve had the opportunity to work with Cotocus and continue to contribute to multiple platforms where I share insights across different domains:
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DevOps School – Tech blogs and tutorials
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Holiday Landmark – Travel stories and guides
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Stocks Mantra – Stock market strategies and tips
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My Medic Plus – Health and fitness guidance
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TrueReviewNow – Honest product reviews
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Wizbrand – SEO and digital tools for businesses
I’m also exploring the fascinating world of Quantum Computing.
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