rustHow to compile a regex in Rust?

Compiling a regex in Rust is a simple process. It can be done using the regex! macro. This macro takes a string literal containing the regular expression and returns a Regex object.

let re = regex!(r"^\d{4}-\d{2}-\d{2}$");

The regex! macro takes the following parts:

• r: A raw string literal prefix. This tells the compiler to interpret the string as a regular expression instead of a normal string.
• The regular expression itself: ^\d{4}-\d{2}-\d{2}$

The output of the example code is a Regex object that can be used to match strings against the regular expression.

Helpful links

• The Rust Programming Language - Regular Expressions
• The Rust Reference - regex!

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