gistfile1.rs

            let mut result = "".into_string();
            let mut chars = remainder.chars();
            loop {
                match chars.next() {
                    Some('-') => {
                        match chars.next() {
                            Some(c) if 'a' <= c && c <= 'z' => {
                                result.push(c.to_uppercase());
                            },
                            Some(c) => {
                                result.push('-');
                                result.push(c);
                            },
                            None => {
                                result.push('-');
                                break;
                            },
                        }
                    },
                    Some(c) => {
                        result.push(c);
                    }
                    None => break,
                }
            }