rustvla | Rust practice challenges

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Enums are a fundamental feature in Rust that let you define a type that can be one of several distinct variants. Enums make it easier to represent a set of related states or options cleanly and effectively.

In this challenge, you will implement a simple TrafficLight enum to represent the states of a traffic light: Red, Yellow, and Green. Each variant will be a unit struct with no associated data.

Your Task

Create an enum TrafficLight with three variants:

Red representing the red light.
Yellow representing the yellow light.
Green representing the green light.

Write a function light_action that takes a TrafficLight and returns a string describing the action associated with the light.

For Red, return "Stop".
For Yellow, return "Caution".
For Green, return "Go".

Hints

<details> <summary>Click here to reveal hints</summary>

Use the match statement to handle each enum variant.

</details>

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pub enum TrafficLight {
    // Define enum variants here
}

pub fn light_action(light: &TrafficLight) -> &'static str {
    // Your code here...
}

pub enum TrafficLight {
    // Define enum variants here
}

pub fn light_action(light: &TrafficLight) -> &'static str {
    // Your code here...
}