This is a beginner-friendly course on learning the Dart language and mastering its fundamentals to build high-quality mobile apps with Flutter.

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Learn Dart for free with this interactive course. Dart is a clean, simple, class-based, object-oriented language with more structure than JavaScript, the programming language it's heavily based on. However, you can't have a conversation about Dart without mentioning Flutter. 

Flutter is Google's mobile UI framework for crafting high-quality native interfaces on iOS and Android. Flutter applications are written using the Dart programming language, which has helped make Dart a beloved language by the developer community. Before you can start fluttering out Flutter applications, you must learn Dart. This course will help you learn the fundamentals of Dart and start your journey to learning Flutter. Start learning today.

Learn Dart: First Step to Flutter

A blueprint is used to create identical copies of the same object.

A blueprint is used to create identical copies of the same object.

The members of a class can be divided into the following two parts:

The members of a class can be divided into the following two parts:

An instance is a singular occurrence of something the same way an object is a single occurrence of a class

Why is an object known as an *instance* of a class?



Why is an object known as an instance of a class?

Members of the class are incorrectly defined

The code below declares an `EqualShape` class and creates its instance, `square`,  whose property, `numOfSides`, is assigned a value of **5**.

Why will the code not compile?

```
class EqualShape{
  var numOfSides=0;
  var lengthOfSides=0;

  perimeter() {
    return numOfSides * lengthOfSides;
  } 
}

int main() {
  var square = EqualShape;
  square.numOfSides = 5;
}
```

The code below declares an <code>EqualShape</code> class and creates its instance, <code>square</code>, whose property, <code>numOfSides</code>, is assigned a value of 5.
Why will the code not compile?
<pre><code>class EqualShape{
 var numOfSides=0;
 var lengthOfSides=0;

 perimeter() {
 return numOfSides * lengthOfSides;
 } 
}

int main() {
 var square = EqualShape;
 square.numOfSides = 5;
}
</code></pre>

What will be the output of the following code?

```
class EqualShape{
  var numOfSides = 0;
  var lengthOfSides = 0;

  perimeter(){
    return numOfSides * lengthOfSides;
  }  
}

int main() {
  var shape = EqualShape();
  shape.numOfSides = 5;
  shape.lengthOfSides = 5;
  var result = shape.perimeter();
  print(result);
}
```

What will be the output of the following code?
<pre><code>class EqualShape{
 var numOfSides = 0;
 var lengthOfSides = 0;

 perimeter(){
 return numOfSides * lengthOfSides;
 } 
}

int main() {
 var shape = EqualShape();
 shape.numOfSides = 5;
 shape.lengthOfSides = 5;
 var result = shape.perimeter();
 print(result);
}
</code></pre>

Test the concepts you learned in this chapter.

Introduction

Getting Started with Dart

Data Types and Variables

Operators

Dart's Collection

Control Flow Statements

Exploring Functions

Classes

Where to Go From Here

Chapter Quiz