Wsrtjtyk

I'm trying to parse an array with customer structures from JSON using Serde. I simplified the example to reproduce the problem, but the idea is the same - I have vector with customer structs:

#[derive(Debug)]

struct X {

    x: String,

    y: String,

}



fn get_d<'a>() -> Vec<&'a X> {

    let mut y: Vec<&X> = vec!;

    let x = vec![

        &X {

            x: String::new(),

            y: String::new(),

        },

        &X {

            x: String::new(),

            y: String::new(),

        },

    ];

    for i in x.iter() {

        y.push(i);

    }



    y

}



fn main() {

    let d = get_d();

    println!("{:?}", d);

}

I got the error:

error[E0597]: borrowed value does not live long enough

  --> src/main.rs:10:10

   |

10 |           &X {

   |  __________^

11 | |             x: String::new(),

12 | |             y: String::new(),

13 | |         },

   | |_________^ temporary value does not live long enough

...

18 |       ];

   |        - temporary value only lives until here

   |

note: borrowed value must be valid for the lifetime 'a as defined on the function body at 7:10...

  --> src/main.rs:7:10

   |

7  | fn get_d<'a>() -> Vec<&'a X> {

   |          ^^

   = note: consider using a `let` binding to increase its lifetime

If I change String to u16 at x and y fields in the X struct then it works. The idea is I want to return some part of the vector from the function, nevermind values or pointers.

If I try to return a vector of values I get:

14 |         y.push(*i);

   |                ^^ cannot move out of borrowed content