Simple use of closures in Swift 5.

Closures.swift

//
// Simple use of closures
//

// basic closure
let basic = {
    print("I like pizza.")
}
basic()     // I like pizza.


// accepting parameters
let accepting = { (place: String) in
    print("I am going to \(place).")
}
accepting("Edinburgh")     // I am going to Edinburgh.


// returning values
let returning = { (place: String) -> String in
    return "I am going to \(place)."
}
print(returning("Edinburgh"))     // I am going to Edinburgh.