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Introduction to Dart

bookYour First Dart Application

Let's consider the most straightforward program on Dart:

main.dart

main.dart

copy

              
123

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

As you can see, this program prints the phrase Hello, world!.

Code Syntax

  1. Look at the void main(). Every program needs the main() function, from which code execution begins. The void is a type of function. We will talk about types of functions in the future;

  2. Look inside the curly brackets {}. Dart code is written in the function's body, that is, in curly braces {}. The space in the curly brackets {} is the function's body, in which we will write all the commands that will work in this function;

  3. Look at the semicolon ;. After each line of code, we put a semicolon. Otherwise, the development environment will report an error to us. Such line separation is necessary so that the dart interpreter knows where one instruction ends and where another begins.

question mark

What is in the body of the main function?

Select the correct answer

Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

Seksjon 1. Kapittel 2

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bookYour First Dart Application

Sveip for å vise menyen

Let's consider the most straightforward program on Dart:

main.dart

main.dart

copy

              
123

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

As you can see, this program prints the phrase Hello, world!.

Code Syntax

  1. Look at the void main(). Every program needs the main() function, from which code execution begins. The void is a type of function. We will talk about types of functions in the future;

  2. Look inside the curly brackets {}. Dart code is written in the function's body, that is, in curly braces {}. The space in the curly brackets {} is the function's body, in which we will write all the commands that will work in this function;

  3. Look at the semicolon ;. After each line of code, we put a semicolon. Otherwise, the development environment will report an error to us. Such line separation is necessary so that the dart interpreter knows where one instruction ends and where another begins.

question mark

What is in the body of the main function?

Select the correct answer

Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

Seksjon 1. Kapittel 2
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