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use std::fmt;

pub trait Runnable : fmt::Display {
    fn id(&self) -> usize;
    fn init(&mut self) -> bool;
    fn write_input(&mut self, input_number: usize, new_value: Option<String>);
    fn inputs_satisfied(&self) -> bool;
    fn run(&mut self) -> Option<String>;
    fn output_destinations(&self) -> Vec<(usize, usize)>;
    fn to_code(&self) -> String;
}