kaira 0.1.0

A Declarative and Deterministic Command Line Parser
Documentation 
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pub fn is_key(input: &str) -> bool {
    if input.as_bytes()[0usize] != b'-' {
        return false;
    }

    if input.as_bytes()[1usize] != b'-' {
        if input.len() != 2 {
            return false;
        }

        return input.chars().nth(1).unwrap().is_alphabetic();
    }

    return input[2..].chars().all(|c| c.is_alphanumeric());
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_alphanumeric() {
        let key = "--key";
        assert_eq!(is_key(key), true);
    }
}