「東雲 忠太郎」の平凡な日常のできごと

Here’s a simple Dart sample code that demonstrates basic functionality, such as defining a class, creating objects, and using methods:

```dart

// Define a class

class Dog {

  // Properties

  String name;

  int age;

  // Constructor

  Dog(this.name, this.age);

  // Method to display info

  void bark() {

    print('$name says: Woof! I am $age years old.');

  }

}

void main() {

  // Create an instance of Dog

  Dog myDog = Dog('Buddy', 3);

  

  // Call the method

  myDog.bark();

}

```

### Explanation:

- **Class Definition**: The `Dog` class has two properties, `name` and `age`, along with a constructor to initialize these properties.

- **Method**: The `bark()` method outputs a message that includes the dog's name and age.

- **Main Function**: In the `main()` function, an instance of `Dog` is created, and the `bark()` method is called.

You can explore more about Dart programming and its features through tutorials available on the [Dart official website](https://dart.dev/guides) or resources like [W3Schools](https://www.w3schools.io/languages/dart-tutorials/)【106†source】【107†source】.