Swift's Optional is pretty awesome, but it can always get better. This repository is an humble attempt to add some utility methods to it.
let number: Int? = 3
let biggerThan2 = number.filter { $0 > 2 } // .Some(3)
let biggerThan3 = number.filter { $0 > 3 } // .Nonelet number: Int? = 3
number.mapNil { 2 } // .Some(3)
let nilledNumber: Int? = nil
nilledNumber.mapNil { 2 } // .Some(2)let number: Int? = 3
number.flatMapNil { .Some(2) } // .Some(3)
let nilledNumber: Int? = nil
nilledNumber.flatMapNil { .Some(2) } // .Some(2)let number: Int? = 3
number.then { print($0) } // prints "3"
let nilledNumber: Int? = nil
nilledNumber.then { print($0) } // print won't be calledlet number: Int? = 3
number.maybe(100) { $0 1 } // 4
let nilledNumber: Int? = nil
nilledNumber.maybe(100) { $0 1 } // 100let number: Int? = 3
let sameNumber = number.onSome { print($0) } // prints "3" & returns .Some(3)
let nilledNumber: Int? = nil
let sameNilledNumber = nilledNumber.onSome { print($0) } // .Nonelet number: Int? = 3
let sameNumber = number.onNone { print("Hello World") } // .Some(3)
let nilledNumber: Int? = nil
let sameNilledNumber = nilledNumber.onNone { print("Hello World") } // prints "Hello World" & returns .Nonelet number: Int? = 3
let isSome = number.isSome // true
let nilledNumber: Int? = nil
let isSome = nilledNumber.isSome // falselet number: Int? = 3
let isSome = number.isNone // false
let nilledNumber: Int? = nil
let isSome = nilledNumber.isNone // trueCarthage:
github "RuiAAPeres/OptionalExtensions"
CocoaPods:
pod "OptionalExtensions"
Manually:
Grab the OptionalExtensions.swift file and drop it in your project.
We will gladly accept Pull Requests with new methods or improving the ones that already exist. Documentation, or tests, are always welcome as well. ❤️
OptionalExtensions is licensed under the MIT License, Version 2.0. View the license file
Copyright (c) 2015 Rui Peres