Rust Programming Cookbook

How to do it...

Let's follow a few steps to explore regular expressions in Rust:

1. Open a Terminal to create a new project using cargo new regex --lib . Use VS Code to open the project directory.

2. First, we are going to add the regex crate to our dependencies in Cargo.toml:

[dependencies]regex = "1"

3. Next, let's open src/lib.rs to create some tests that we can run. To start, we create a tests module, replacing any existing code:

#[cfg(test)]mod tests {    use regex::Regex;    use std::cell::RefCell;    use std::collections::HashMap;}

4. Regular expressions are typically used to parse data or validate that the data conforms to the expression's rules. Let's add a test inside the tests module for some simple parsing:

    #[test] fn simple_parsing() { ...