rustHow to escape parentheses in a Rust regex?

To escape parentheses in a Rust regex, you can use a backslash (\) before the parentheses. For example:

let re = Regex::new(r"\(test\)").unwrap();

This will create a regex that matches the literal string (test).

Code explanation

• let re =: This declares a variable re of type Regex.
• Regex::new: This is a static method of the Regex type that creates a new Regex from a string.
• r"\(test\)": This is the string passed to Regex::new. The r indicates that it is a raw string, which means that backslashes are not treated as escape characters. The backslash before the parentheses escapes them, so that the regex matches the literal string (test).

Helpful links

• The Rust Programming Language - Regular Expressions

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