Function fmt 

pub fn fmt<F: Fn(&mut Formatter<'_>) -> Result>(closure: F) -> fmt<F>

Returns a displayable object using the closure argument as its implementation.

let s = fmtools::fmt(|f| {
	f.write_str("display")
});
assert_eq!(s.to_string(), "display");

This is useful to insert ad-hoc formatting code:

println!("Hello {}!", fmtools::fmt(|f| {
	f.write_str("world")
}));
// Prints `Hello world!`