Closures in Swift

closures.swift

var noParametersOrReturn: () -> () = {
  print("I have no parameters or return values, so I print"
}

// noParametersOrReturn()

var noParameterAndOneReturn: () -> String = {
    return "I am a string"
}

var oneParameterAndReturn: (String) -> String = { name -> String in 
     return "My name is " + name
}

var multipleParametersAndOneReturn: (String, String) -> String = { (firstname, lastname) -> String in 
  return firstname + lastname
}
//Inferred type closures 

var oneParameterAndMultipleReturns_I = { (array: [Int]) -> (evens: [Int], odd: [Int]) in
    var evens = [Int]()
    var odd = [Int]()
    
    for element in array {
        element % 2 == 0 ? evens.append(element) : odd.append(element)
    }
    return (evens, odd)
    
}

oneParameterAndMultipleReturns_I([1, 2, 3, 4, 5, 6, 7, 8, 9]).evens