Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Hands-On Functional Programming with C++
  • Table Of Contents Toc
  • Feedback & Rating feedback
Hands-On Functional Programming with C++

Hands-On Functional Programming with C++

By : Alexandru Bolboacă
4 (2)
close
close
Hands-On Functional Programming with C++

Hands-On Functional Programming with C++

4 (2)
By: Alexandru Bolboacă

Overview of this book

Functional programming enables you to divide your software into smaller, reusable components that are easy to write, debug, and maintain. Combined with the power of C++, you can develop scalable and functional applications for modern software requirements. This book will help you discover the functional features in C++ 17 and C++ 20 to build enterprise-level applications. Starting with the fundamental building blocks of functional programming and how to use them in C++, you’ll explore functions, currying, and lambdas. As you advance, you’ll learn how to improve cohesion and delve into test-driven development, which will enable you in designing better software. In addition to this, the book covers architectural patterns such as event sourcing to help you get to grips with the importance of immutability for data storage. You’ll even understand how to “think in functions” and implement design patterns in a functional way. By the end of this book, you’ll be able to write faster and cleaner production code in C++ with the help of functional programming.
Table of Contents (23 chapters)
close
close
Free Chapter
1
Section 1: Functional Building Blocks in C++
7
Section 2: Design with Functions
12
Section 3: Reaping the Benefits of Functional Programming
17
Section 4: The Present and Future of Functional Programming in C++

Lazy evaluation

We have seen, in past chapters, how to structure code in a functional way, by taking advantage of small transformations on data structures. Let's take a simple example—compute the sum of all even numbers from a list. The structured programming approach would be to write a loop that goes over the whole structure and adds all elements that are even:

int sumOfEvenNumbersStructured(const list<int>& numbers){
int sum = 0;
for(auto number : numbers){
if(number % 2 == 0) sum += number;
}
return sum;
};

The test for this function runs correctly on a simple example:

TEST_CASE("Run events and get the user store"){
list<int> numbers{1, 2, 5, 6, 10, 12, 17, 25};

CHECK_EQ(30, sumOfEvenNumbersStructured(numbers));
}

Of course, this method mutates data and we have seen that it's not always a good idea. It also...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY