Book Image

Practical WebAssembly

By : Sendil Kumar Nellaiyapen
Book Image

Practical WebAssembly

By: Sendil Kumar Nellaiyapen

Overview of this book

Rust is an open source language tuned toward safety, concurrency, and performance. WebAssembly brings all the capabilities of the native world into the JavaScript world. Together, Rust and WebAssembly provide a way to create robust and performant web applications. They help make your web applications blazingly fast and have small binaries. Developers working with JavaScript will be able to put their knowledge to work with this practical guide to developing faster and maintainable code. Complete with step-by-step explanations of essential concepts, examples, and self-assessment questions, you’ll begin by exploring WebAssembly, using the various tools provided by the ecosystem, and understanding how to use WebAssembly and JavaScript together to build a high-performing application. You’ll then learn binary code to work with a variety of tools that help you to convert native code into WebAssembly. The book will introduce you to the world of Rust and the ecosystem that makes it easy to build/ship WebAssembly-based applications. By the end of this WebAssembly Rust book, you’ll be able to create and ship your own WebAssembly applications using Rust and JavaScript, understand how to debug, and use the right tools to optimize and deliver high-performing applications.
Table of Contents (15 chapters)
1
Section 1: Introduction to WebAssembly
5
Section 2: WebAssembly Tools
9
Section 3: Rust and WebAssembly

Installing Rust

Rust is a compiled language and its compiler is called the Rust compiler (rustc). Rust also has its own package manager, called Cargo. Cargo is similar to npm for Node.js. Cargo downloads package dependencies and builds, compiles, packs, and uploads the artifacts into crates (Rust's version of packages).

The Rust language provides an easy way to install and manage Rust via rustup. rustup helps to install, update, and remove rustc, Cargo, and rustup itself. It makes it easy to install and manage various versions of Rust.

Let's install Rust using the rustup tool and see how we can manage Rust versions using rustup.

In Linux or macOS, use the following command:

$ curl https://sh.rustup.rs --sSf | sh

The script will download and install the Rust language. Both rustc and Cargo are installed in ~/.cargo/bin and delegate any access to the underlying toolchain.

For Windows, download and install the binaries from here: https://forge.rust-lang.org...