Learn the Basics of Dart

Dart is a popular programming language often used for web and mobile app development, especially with the Flutter framework.

1. Hello Dart :

void main() {
  print('Hello, Dart!');
}

Explanation:

• void main() is the entry point of a Dart program.
• print() is used to display output to the console.

2. Variables and Data Types :

Dart has several data types, including int, double, String, bool, and more.

int age = 25;
double pi = 3.14;
String name = 'Alice';
bool isStudent = true;

3. Control Structures :

Dart supports common control structures like if, else, for, while, and switch

if (isStudent) {
  print('Student');
} else {
  print('Not a student');
}

for (var i = 0; i < 5; i++) {
  print('Count: $i');
}

4. Functions :

Functions are defined using the functionName() syntax.

String greet(String name) {
  return 'Hello, $name!';
}

You can use the => syntax for one-liner functions.

int square(int x) => x * x;

5. Lists and Maps :

Lists hold a collection of items, while maps store key-value pairs.

List<int> numbers = [1, 2, 3];
Map<String, int> scores = {'Alice': 95, 'Bob': 88};

6. Classes and Objects :

Dart is an object-oriented language; you can create classes and objects.

class Person {
  String name;
  int age;

  Person(this.name, this.age);
}

var alice = Person('Alice', 30);

7. Exception Handling :

Use try, catch, and finally for error handling.

try {
  // Code that may throw an exception
} catch (e) {
  print('An error occurred: $e');
} finally {
  // Code that always runs
}

Before diving into Flutter, it’s important to grasp these fundamental Dart concepts. Flutter is built with Dart, and having a strong foundation in Dart will make it easier to develop efficient and high-quality Flutter apps. Dart’s syntax and features provide a solid basis for Flutter development, enabling you to create mobile, web, and desktop applications effectively.