rustHow to capture closure in Rust

Capturing a closure in Rust is done by using the Fn trait. This trait allows a closure to be stored in a variable and then called later. To capture a closure, the variable must be declared with the Fn trait and the closure must be passed as an argument. For example:

let my_closure = |x| x + 1;
let my_fn = Fn::new(my_closure);

The Fn trait is implemented for all closures that take up to three parameters and return a value. The closure can then be called using the call method. For example:

let result = my_fn.call(2);

This will call the closure with the argument 2 and return the result 3.

Detailed information about the Fn trait can be found in the Rust documentation. Additionally, the Rust book provides a more in-depth explanation of closures in Rust.

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