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.

Dock.tar.gz

assert

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

## Problem statement

You need to create a higher-order function, `arithmeticCalculator`, which returns the result of an arithmetic function that has two parameters of type `int` and returns a value of type `num`.

In this challenge, you will assume that the following arithmetic functions have been declared:

```
num add(int a, int b) {
  return a + b;
}

num subtract(int a, int b) {
  return a - b;
}

num multiply(int a, int b) {
  return a * b;
}

num divide(int a, int b) {
  return a / b;
}
```

For instance, the `arithmeticPrinter` will take the `add` function as input and return its result.
 

### Input

`arithmeticPrinter` has three parameters.
1. A function, `f`
2. An integer, `x`
3. An integer, `y`

The input will be a function and two integers that will be passed to the function.


### Output
The output will be the result of the arithmetic function.

### Sample input
```
add, 4, 9
```

### Sample output
```
13
```
### Test yourself

Write your code in the given area. Try the exercise by yourself first, but if you get stuck, the solution has been provided. Good luck!

# Problem statement

You need to create a higher-order function, `arithmeticCalculator`, which returns the result of an arithmetic function that has two parameters of type `int` and returns a value of type `num`.

In this challenge, you will assume that the following arithmetic functions have been declared:

```
num add(int a, int b) {
  return a + b;
}

num subtract(int a, int b) {
  return a - b;
}

num multiply(int a, int b) {
  return a * b;
}

num divide(int a, int b) {
  return a / b;
}
```

For instance, the `arithmeticPrinter` will take the `add` function as input and return its result.
 

## Input

`arithmeticPrinter` has three parameters.
1. A function, `f`
2. An integer, `x`
3. An integer, `y`

The input will be a function and two integers that will be passed to the function.


## Output
The output will be the result of the arithmetic function.

## Sample input
```
add, 4, 9
```

## Sample output
```
13
```
## Test yourself

Write your code in the given area. Try the exercise by yourself first, but if you get stuck, the solution has been provided. Good luck!

Test yourself and implement what you have learned so far 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

Challenge: Write your First Higher-Order Function

Problem statement