swift 在Swift中创建自定义运算符

Posted 2021-05-19

//Creating an operator
//prefix, postfix, infix
//https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/Declarations.html
//https://developer.apple.com/reference/swift/swift_standard_library_operators

postfix operator ***

///Cubes value
postfix func *** (_ input: Int) -> Int {
    return input * input * input
}

2*** //8

infix operator >>>: MultiplicationPrecedence

/// Adds values and multiplies by 3
func >>>(_ lhs: Int, _ rhs: Int) -> Int {
    return (lhs + rhs) * 3
}

2>>>3 //15