Zip function.
Zip function is defined on sequences in Swift. This is a nice extension to have it on Optional.
Let say you have some computations or values that are optional. It might be tedious to if let them. Using zip you just flip the container inside out (check out how type is transformed in this documentation on zip in haskell) and map on the result.
let userName: String?
let userLast: String?
let userAge: Int?
zip(userName, userLast, userAge)
.map{ (name: String, last: String, age: Int) in
// Working with not optional values
}If you want to streamline working with Optionals in Swift then please checkout OptionalAPI Swift Package. It has rich documentation and tests to show how it can be used.
This project is part of the 🐇🕳 Rabbit Hole Packages Collection