alessandro-martin

Keybase proof

I hereby claim:

• I am alessandro-martin on github.
• I am alessandromartin (https://keybase.io/alessandromartin) on keybase.
• I have a public key ASBw8TbA9KyorMe8iR06bmLiK5mj3Btabhno_jmZVmt7oQo

To claim this, I am signing this object:

alessandro-martin

import Foundation

// A lens is a getter and a setter combined
struct Lens<Whole, Part> {
    let get: (Whole) -> Part
    let set: (inout Whole, Part) -> ()
}

// We can create a lens from a key path
extension Lens {

alessandro-martin

// Up until Xcode 8.3.2
// switching over a type's static properties required full namespace qualification
// This wouldn't compile
// Fixed in Xcode 9 :D

extension String {
    static let firstSection: String = "firstSection"
    static let secondSection: String = "secondSection"
}