Private Set on Swift Property

Swift supports public get but private set on properties:

// foo.swift
public class Foo {
  public private(set) var bar: String = "hahaha"
}

// baz.swift
let foo = Foo()
foo.bar = "muhahaha" // "Cannot assign to property: 'bar' setter is inaccessible"

So, Foo is a public class with a public String property called bar. This property can be read, but cannot be set from the outside.