Gain insights into Dart, an object-oriented language crucial for Flutter development. Delve into its fundamentals and prepare to craft high-quality native interfaces on iOS and Android.

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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

# Task

In this challenge, you had to create a function that computes the absolute value of a given number.


# Solution

A skeleton of the function was already provided for you. Let's look it over.

```
num absolute(num x) {

}
```

The function name is `absolute`, and it takes a single parameter of type `num` and returns a value of type `num`.

The parameter name is `x` and is the number whose absolute value needs to be calculated. The absolute value of a number is simply the positive value of the number after ignoring its signs, `+` or `-`. Hence, if the given number is `x`, we first need to check if it is positive or negative. If it is negative, we will return its positive value by applying the unary `-` operator to it.

```
-(x) or -x
```

If the number is positive, we will simply return it as is.

```
x
```

You can find the complete solution below:

>You were required to write the code given from **line 2** to **line 3**. The provided solution is using the ternary operator but using an `if-else` statement would result in the correct output. 

Let’s go over the solution for the challenge: Absolute Value.

Introduction

Getting Started with Dart

Data Types and Variables

Operators

Dart's Collection

Control Flow Statements

Exploring Functions

Classes

Where to Go From Here

Solution Review: Absolute Value