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Learn Dart: The First Step to Flutter

Understanding the Code

Explore how to read and write basic Dart programs by understanding the main function, print statements, comments, and the imperative programming style. This lesson helps you grasp core syntax rules and the top-to-bottom execution flow essential for building Dart applications.

We'll cover the following...

Just to refresh our minds, let us take a look at the code for our "Hello World" application.

Dart
void main() {
  // Printing the text 'Hello World'
  print('Hello World');
}

  • Line 1: We define the main function using the void keyword to establish the program's starting point.

  • Line 2: We write a descriptive comment to explain the upcoming instruction to other developers.

  • Line 3: We invoke the print function to output our specified text string to the console.

  • Line 4: We close the function block to cleanly terminate the entry point. ...

The print function