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Introduction to Dart

bookYour First Dart Application

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!.

  1. 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. 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 the role of the main() function in a Dart application?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 1. ChapterΒ 2

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bookYour First Dart Application

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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!.

  1. 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. 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 the role of the main() function in a Dart application?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 1. ChapterΒ 2
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