Rust Matching Example

gistfile1.txt

// Taken from YouTube video by Jeremy Chone: https://www.youtube.com/watch?v=VQdStWU2ewY

use Activity::*;

pub enum Activity{
    Sleeping(Option<u16>),
    Skiing {resort: String},
    Coding
}


fn main() {
    let activity = Sleeping(Some(9));   // Can be None
    let is_weekend = false;
    let is_powder_day = true;           // good snow
    
    let message = match (&is_powder_day, &is_weekend, &activity) {
        (true, true, Sleeping(_) | Coding) => format!("Go Ski"),
        (_, true, Sleeping(Some(h))) if h > &10 => format!("Wake up it's {} o'clock", h),
        (_, false, Sleeping(Some(h))) if h > &8 => format!("Wake up it's {} o'clock", h),
        (_, _, Sleeping(_)) => format!("ZZzzzz"),
        (_, _, Skiing{resort}) => format!("Skiing {}", resort),
        (_, _, Coding) => format!("Coding"),
    };
    
    println!("{}", message);
}