gw-rust-programming-tutorial 0.1.0

gw rust test.
Documentation 
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use std::{env};


pub fn test_err_to_stderr() {

    parse_env();
}

fn parse_env() -> Result<(), &'static str> {
    if env::vars().count() == 0 {
        return Err("not enough arguments");
    }

    for (k,v) in env::vars() {
        eprintln!("stderr:\t{}={}",k,v);
    }

    Ok(())
}