How to impl add for a generic in Rust

Why does the compiler not know how to add &Point ? Getting the following error: error[E0369]: cannot add &Point<TextP> to &Point<TextP> --> src/main.rs:72:16 | 72 | let g = &e + &f; | -- ^ -- &Point | | | &Point | = note: an implementation of std::ops::Add might be missing for &Point<TextP>

    use std::ops::Add;  use std::cmp::PartialEq;    #[derive(Debug)]  pub struct Point<T> {      x:Option<T>,      y:T,  }    #[derive(Debug)]  pub struct TextP {      p: i32  }    impl Add for TextP {      type Output = TextP;      fn add(self, other: TextP) -> TextP {          TextP{p: self.p + other.p}      }  }    impl <'a, 'b> Add<&'b TextP> for &'a TextP {      type Output = TextP;      fn add(self, other: &'b TextP) -> TextP {          TextP {p: self.p + other.p}      }  }       impl<'a, 'b, T> Add<&'b Point<T>> for &'a Point<T>       where &'a T: Add<&'b T, Output=T>,         T: PartialEq + Add<Output = T>  {      type Output = Point<T>;      fn add(self, other: &'b Point<T>) -> Point<T> {          Point {              x: Some(self.x.as_ref().unwrap() + other.x.as_ref().unwrap()),              y: self.y + other.y          }      }  }          impl<T: Add<Output = T>> Add for Point<T> {      type Output = Point<T>;      fn add(self, other: Point<T>) -> Point<T> {          Point {              x:Some(self.x.unwrap() + other.x.unwrap()),              y:self.y + other.y,          }      }  }        fn main() {      let a = Point{x:Some(5.5), y:5.5};      let b = Point{x:Some(30.5), y:50.6};      let c = &a + &b;      println!("{:?}", a);      let d = a + b;      println!("c = {:?}",c);      println!("d = {:?}",d);        let e = Point{x:Some(TextP{p:1}), y:TextP{p:2}};      let f = Point{x:Some(TextP{p:1}), y:TextP{p:2}};      let g = &e + &f;      println!("{:?}", g);        let x = TextP {p: 1};      let y = TextP {p: 1};      let z = &x + &y;  }  

https://stackoverflow.com/questions/67249100/how-to-impl-add-for-a-generic-in-rust April 25, 2021 at 10:05AM