Macro fmt 

macro_rules! fmt {
    ($fmt:literal $($rest:tt)*) => { ... };
    ($fn:expr) => { ... };
}

Like format_args! or fmt_with() depending on usage.

This macro accepts either a formatting arguments or a closure. It is similar to format::lazy_format! with the added benefit of being a declarative macro rather than a procedural macro.

This always returns FmtWith<impl Fn(&mut Formatter) -> Result>.

Examples

let a = fmty::fmt!("hola");
let b = fmty::fmt!("{}", "hola");
let c = fmty::fmt!(|f| f.write_str("hola"));

assert_eq!(a.to_string(), b.to_string());
assert_eq!(a.to_string(), c.to_string());