Value types mutation on copy operator

MutateOperator.swift

import Foundation

precedencegroup MutationPrecedence {
    associativity: left
}

infix operator +> : MutationPrecedence

func +> <A> (v: A, f: (inout A) -> Void) -> A {
    var copy = v
    f(&copy)
    return copy
}

struct User {
    var name: String
    var occupation: String
}

let fede = User(name: "Fede", occupation: "Developer")

let fer = fede +> { $0.name = "Fer" }

print(fede)
print(fer)