🎯 Dart Basics Repository

Welcome to the Dart Basics repository! This repository is designed to help you get started with Dart, a powerful language used for building web, mobile, and desktop applications. 🚀

📂 Repository Structure

hello_world.dart: A simple "Hello, World!" program.
variables.dart: Learn about Dart variables and data types.
functions.dart: Basic function usage and examples.
control_flow.dart: Control structures like if-else, loops, and more.
classes_objects.dart: Introduction to object-oriented programming in Dart.

🛠️ How to Run the Code

Make sure you have the Dart SDK installed. Install here.
Clone this repository:

git clone https://github.com/ministerko/Dart.git
cd dart-basics

Run a specific Dart file:

dart run hello_world.dart

📚 Dart Basics

1. Variables 📦

Variables in Dart can be declared with var or by specifying the type explicitly:

var name = 'Kelvin'; // Inferred as String
int age = 25;        // Explicit type declaration

2. Functions 🔧

Functions can return values or just perform actions:

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

int add(int a, int b) {
  return a + b;
}

3. Control Flow 🔄

`if-else`:

int age = 20;

if (age >= 18) {
  print('You are an adult! 🎉');
} else {
  print('You are still a minor. 🌱');
}

`for` loop:

for (int i = 0; i < 5; i++) {
  print('Dart is awesome! 😎');
}

4. Classes & Objects 👨‍💻

Dart supports object-oriented programming with classes:

class Person {
  String name;
  int age;

  // Constructor
  Person(this.name, this.age);

  void displayInfo() {
    print('Name: $name');
    print('Age: $age');
  }
}

void main() {
  Person person1 = Person('Kelvin', 25);
  person1.displayInfo();
}

5. Null Safety 🚫

Dart ensures null safety, so you have to initialize non-nullable variables:

String name = 'Kelvin'; // Cannot be null

If a variable can be null, you use a nullable type:

String? optionalName;
optionalName = null; // Allowed

🔗 Resources

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.