In this chapter, we have learned that, error handling in Rust is explicit: operations that can fail have a two-part return value via the Result or Option generic types. You must handle errors in some way, either by unpacking the Result/Option values with a match statement, or by using combinator methods. Unwrapping should be avoided on error types. Instead, use combinators or match expressions to take appropriate action or propagate the error to the caller by using the ? operator. It is okay to panic when programming errors are so fatal that recovery would be impossible. Panics are mostly non-recoverable, which means that they crash your thread. Their default behavior is unwinding, which can be expensive and can be turned off if programs don't want this overhead. It is advised to be as descriptive as possible when communicating errors, and authors are encouraged...
Mastering Rust - Second Edition
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Mastering Rust - Second Edition
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Overview of this book
Rust is an empowering language that provides a rare combination of safety, speed, and zero-cost abstractions. Mastering Rust – Second Edition is filled with clear and simple explanations of the language features along with real-world examples, showing you how you can build robust, scalable, and reliable programs.
This second edition of the book improves upon the previous one and touches on all aspects that make Rust a great language. We have included the features from latest Rust 2018 edition such as the new module system, the smarter compiler, helpful error messages, and the stable procedural macros. You’ll learn how Rust can be used for systems programming, network programming, and even on the web. You’ll also learn techniques such as writing memory-safe code, building idiomatic Rust libraries, writing efficient asynchronous networking code, and advanced macros. The book contains a mix of theory and hands-on tasks so you acquire the skills as well as the knowledge, and it also provides exercises to hammer the concepts in.
After reading this book, you will be able to implement Rust for your enterprise projects, write better tests and documentation, design for performance, and write idiomatic Rust code.
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Current Title:
Mastering Rust - Second Edition
Table of Contents (19 chapters)
Preface
Free Chapter
Getting Started with Rust
Managing Projects with Cargo
Tests, Documentation, and Benchmarks
Types, Generics, and Traits
Memory Management and Safety
Error Handling
Advanced Concepts
Concurrency
Metaprogramming with Macros
Unsafe Rust and Foreign Function Interfaces
Logging
Network Programming in Rust
Building Web Applications with Rust
Interacting with Databases in Rust
Rust on the Web with WebAssembly
Building Desktop Applications with Rust
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