Expand description
The type returned by formatter methods.
Examples
use std::fmt;
#[derive(Debug)]
struct Triangle {
a: f32,
b: f32,
c: f32
}
impl fmt::Display for Triangle {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({}, {}, {})", self.a, self.b, self.c)
}
}
let pythagorean_triple = Triangle { a: 3.0, b: 4.0, c: 5.0 };
assert_eq!(format!("{}", pythagorean_triple), "(3, 4, 5)");