Mastering Strings in Rust: The Key to Efficient Text Data Handling

In Rust, String is a growable, mutable, owned, and UTF-8 encoded string type. It allows you to store and manipulate text data efficiently. Like Vec, String is part of the Rust prelude, making it available without explicitly importing it. Strings are essentially a Vec u8 underneath, with additional functionality for working with UTF-8 encoded text.

This example demonstrates how to create a new String, add text, access characters by index, concatenate strings, iterate over characters, and replace a substring within the String. The code is well-commented to make it easy to understand each step.