balsa 0.3.2

Reference implementation for the Balsa molecular line notation.
Documentation 
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use std::{fmt, fmt::Write};

#[derive(Debug, PartialEq, Clone)]
pub enum Selection {
    B,
    C,
    N,
    O,
    P,
    S,
}

impl fmt::Display for Selection {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_char(match self {
            Selection::B => 'b',
            Selection::C => 'c',
            Selection::N => 'n',
            Selection::O => 'o',
            Selection::P => 'p',
            Selection::S => 's',
        })
    }
}