Ownership and borrowing error

1

let element_frequency : Vec<(&String, usize)> = duplicate_uniques.into_iter().map(|x| (&x, get_frequency(&uniques, x))).collect();
I used the variable x many times in code so it is showing the error as

let element_frequency : Vec<(&String, usize)> = duplicate_uniques.into_iter().map(|x| (&x, get_frequency(&uniques, x))).collect();
| - -----------------------------^--
| | || |
| | || move out of x occurs here
| | |borrow of x occurs here
| | returning this value requires that x is borrowed for '1
| return type of closure is (&'1 std::string::String, usize)

Could you please help me to fix that error

2

Please read the pinned post about code formatting, and edit your post accordingly.

3

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