Understanding Rust Strings: A Comprehensive Guide
Rust, a systems programming language, offers multiple string types that can be confusing for beginners and experienced developers alike. In this article, we will explore the differences between String and str, two fundamental string types in Rust, and provide guidance on when to use each.
Theoretical Foundations
Before diving into the practical aspects, it’s essential to understand the theoretical foundations of Rust strings. Both String and str are guaranteed to be valid UTF-8, which means they can represent any Unicode character.
What is String?
String is an owned type that needs to be allocated on the heap. It has a dynamic size, which means