titlefmt 0.4.0

Metadata Title Formatting Library
Documentation 
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use std::fmt;

/// A value corresponding to a complete or partial evaluation of a title formatting expression.
#[derive(Clone)]
pub enum Value {
    Text(String),
    Integer(i32),
    Double(f64),
    Unknown,
    Empty,
}

impl fmt::Display for Value {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            &Value::Text(ref v) => write!(f, "{}", v),
            &Value::Integer(ref v) => write!(f, "{}", v),
            &Value::Double(ref v) => write!(f, "{}", v),
            &Value::Empty => write!(f, ""),
            &Value::Unknown => write!(f, "?"),
        }
    }
}