Exercise: Elevator Events

We will create a data structure to represent an event in an elevator control system. It is up to you to define the types and functions to construct various events. Use #[derive(Debug)] to allow the types to be formatted with {:?}.

This exercise only requires creating and populating data structures so that main runs without errors. The next part of the course will cover getting data out of these structures.

# // Copyright 2023 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
{{#include exercise.rs:event}}
    // TODO: add required variants
}

{{#include exercise.rs:direction}}

{{#include exercise.rs:car_arrived}}
    todo!()
}

{{#include exercise.rs:car_door_opened}}
    todo!()
}

{{#include exercise.rs:car_door_closed}}
    todo!()
}

{{#include exercise.rs:lobby_call_button_pressed}}
    todo!()
}

{{#include exercise.rs:car_floor_button_pressed}}
    todo!()
}

{{#include exercise.rs:main}}

• If students ask about #![allow(dead_code)] at the top of the exercise, it's necessary because the only thing we do with the Event type is print it out. Due to a nuance of how the compiler checks for dead code this causes it to think the code is unused. They can ignore it for the purpose of this exercise.