rustHow to pass closure as function argument in Rust

In Rust, closures can be passed as function arguments by using the Fn trait. To do this, the closure must be declared as a parameter of the function, and the Fn trait must be specified for the parameter. For example, the following code passes a closure as an argument to a function:

fn call_closure<F: Fn()>(closure: F) {
    closure();
}

fn main() {
    let closure = || println!("Closure called");
    call_closure(closure);
}

The output of this code is:

Closure called

In this example, the closure is declared as a parameter of the call_closure function, and the Fn trait is specified for the parameter. This allows the closure to be passed as an argument to the function. Inside the function, the closure is called using the closure() syntax.

Helpful links

• Rust Closures
• Fn Trait
• Passing Closures as Arguments

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