Book Image

Hands-On Functional Programming in Rust

By : Andrew Johnson
Book Image

Hands-On Functional Programming in Rust

By: Andrew Johnson

Overview of this book

Functional programming allows developers to divide programs into smaller, reusable components that ease the creation, testing, and maintenance of software as a whole. Combined with the power of Rust, you can develop robust and scalable applications that fulfill modern day software requirements. This book will help you discover all the Rust features that can be used to build software in a functional way. We begin with a brief comparison of the functional and object-oriented approach to different problems and patterns. We then quickly look at the patterns of control flow, data the abstractions of these unique to functional programming. The next part covers how to create functional apps in Rust; mutability and ownership, which are exclusive to Rust, are also discussed. Pure functions are examined next and you'll master closures, their various types, and currying. We also look at implementing concurrency through functional design principles and metaprogramming using macros. Finally, we look at best practices for debugging and optimization. By the end of the book, you will be familiar with the functional approach of programming and will be able to use these techniques on a daily basis.
Table of Contents (12 chapters)

Shipping a product without sacrificing quality

The client has finished negotiating with your sales team—you won the contract. Now that the contract is signed, your team is on task to bring the simulation up to specification to run all of the elevator systems. The client has provided specifications for each of the three buildings, elevators, motor control, and braking systems. You also learn that the elevator motors have intelligent motor control software that regulates internal voltage and current dynamically. To control the motor, you will only be expected to supply the desired force output. The full specifications are as follows:

  • For building 1, there are the following:
    • Floor heights: 8m, 4m, 4m, 4m, 4m
    • Elevator weight: 1,200 kg
    • Elevator motor: Maximum 50,000 N
    • Elevator driver: Software interface supplied
  • For building 2, there are the following:
    • Floor heights: 5m...