Function strfmt_display 

pub fn strfmt_display<'a, K, T: Display>(
    fmtstr: &str,
    vars: &HashMap<K, T>,
) -> Result<String>
where
    K: Hash + Eq + FromStr,

👎Deprecated since 0.2.0:

This function contains a bug when formatting numbers. Use strfmt instead

Rust-style format a string given a HashMap of the variables. see [strfmt] for details