intcodeint 0.2.0

An intcode interpreter for Advent of Code 2019
Documentation 
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use std::io::{stdin, BufRead};

use intcodeint::Machine;

fn main() {
    let stdin = stdin();
    let handle = stdin.lock();
    let mut lines = handle
        .lines()
        .map(|result| result.expect("input/output error"));

    if let Some(code) = lines.next() {
        let nums: Vec<isize> = code
            .split(",")
            .map(|s| s.parse().expect("invalid code"))
            .collect();

        let mut machine = Machine::new();
        machine.copy(0, &nums);

        let input = lines.map(|s| s.parse().unwrap());
        let output = |out| println!("{}", out);

        let result = machine.run(input, output);
        eprintln!("terminated: {}", result);
    }
}