implement Display and Debug Trait with generics struct in Rust

impl_display_and_debug_traits.rs

use std::fmt;

// #[derive(Debug)]
struct Point<T> {
  x: T,
  y: T,
}

impl <T> fmt::Debug for Point<T> where T: fmt::Display {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "[debug] Point at ({}, {})", self.x, self.y)
  }
}

impl <T> fmt::Display for Point<T> where T: fmt::Display {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "[display] Point at ({}, {})", self.x, self.y)
  }
}

fn main() {
  let p: Point<i32> = Point{ x:30, y:8 };
  println!("{:#?}", p);
  println!("{}", p);
}