rustExample of closure that returns future in Rust

A closure in Rust that returns a future can be written as follows:

fn closure_returning_future() -> impl Future<Output = i32> {
    async {
        // Do some asynchronous work here
        42
    }
}

This closure returns a future that resolves to the value 42. The async block is used to define the asynchronous work that the future will perform. The impl Future<Output = i32> syntax is used to specify that the closure returns a future that resolves to the type i32.

Helpful links

• Rust Closures
• Rust Futures
• Rust Async/Await

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