generics ex2

[tariqjamil-bwp]

struct Point <T, U> {
    x: T,
    y: U,
}

impl <T,U> Point <T,U> {
    fn mixup<V,W> (self, other:Point<V,W>) -> Point <T,W> {
        Point {
            x: self.x,
            y: other.y,
        }
    }
}

enum Option <T> {
    Some(T),
    None,
}

use std::fmt::Display;
fn main() {
    let p1 = Point {x:5, y:10.4};
    let p2 = Point {x: "Hello", y: 'c'};
    
    let p3 = p1.mixup(p2);
    
    println!("p3.x = {}, p3.y = {}", p3.x, p3.y);
    
    let integer = Option::Some(5);
    let float = Option::Some(5.0);
    
    println!("integer:{:?}, float:{:?}", integer, float);
    
}

(Playground)

Errors:

   Compiling playground v0.0.1 (/playground)
warning: unused import: `std::fmt::Display`
  --> src/main.rs:20:5
   |
20 | use std::fmt::Display;
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

error[E0277]: `Option<{integer}>` doesn't implement `Debug`
  --> src/main.rs:32:42
   |
32 |     println!("integer:{:?}, float:{:?}", integer, float);
   |                                          ^^^^^^^ `Option<{integer}>` cannot be formatted using `{:?}`
   |
   = help: the trait `Debug` is not implemented for `Option<{integer}>`
   = note: add `#[derive(Debug)]` or manually implement `Debug`
   = note: required by `std::fmt::Debug::fmt`
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `Option<{float}>` doesn't implement `Debug`
  --> src/main.rs:32:51
   |
32 |     println!("integer:{:?}, float:{:?}", integer, float);
   |                                                   ^^^^^ `Option<{float}>` cannot be formatted using `{:?}`
   |
   = help: the trait `Debug` is not implemented for `Option<{float}>`
   = note: add `#[derive(Debug)]` or manually implement `Debug`
   = note: required by `std::fmt::Debug::fmt`
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors; 1 warning emitted

For more information about this error, try `rustc --explain E0277`.
error: could not compile `playground`

To learn more, run the command again with --verbose.