rustHow to clone closure in Rust

Cloning a closure in Rust is done by using the Clone trait. This trait is implemented for all closures that have the same input and output types. To clone a closure, simply call the clone method on the closure. For example, to clone a closure that takes an i32 and returns an i32:

let my_closure = |x: i32| -> i32 { x + 1 };
let cloned_closure = my_closure.clone();

The cloned closure can then be used just like the original closure. For example:

let result = cloned_closure(5); // result is 6

The Clone trait is also implemented for closures that take multiple arguments and return multiple values. To clone such a closure, simply call the clone method on the closure. For example, to clone a closure that takes two i32s and returns an i32 and a String:

let my_closure = |x: i32, y: i32| -> (i32, String) { (x + y, format!("{} + {}", x, y)) };
let cloned_closure = my_closure.clone();

The cloned closure can then be used just like the original closure. For example:

let result = cloned_closure(5, 10); // result is (15, "5 + 10")

Helpful links

• Rust Closures
• Clone Trait
• Cloning Closures

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