How to automatically create an initializer for a Swift class?

Update As of Xcode 11.4

You can refactor (right-click mouse menu) to have generated class and struct memeberwise initializer.

Note: struct auto inititializers are internal. You may what to generate memeberwise initializer when you writing a module to make it public.

Right-click > Refactor > 'Generate Memberwise Initialization'

For older Xcodes

There is a handy plugin for Xcode:https://github.com/rjoudrey/swift-init-generator or https://github.com/Bouke/SwiftInitializerGenerator

Thanks to plugins creators.

Given the following class (or for structs if temporarily change the keyword struct to class and after refactor set back to struct):

class MyClass {    let myIntProperty: Int    let myStringProperty: String    let myOptionalStringProperty: String?    let myForcedUnwrappedOptionalStringProperty: String!}

Go to Xcode and:

1. Double click the class name
2. Right click
3. Refactor
4. Generate Member-wise Initializer

Above steps look like this:

Just a tiny second later, Xcode generates this initializer:

internal init(myIntProperty: Int, myStringProperty: String, myOptionalStringProperty: String?, myForcedUnwrappedOptionalStringProperty: String?) {    self.myIntProperty = myIntProperty    self.myStringProperty = myStringProperty    self.myOptionalStringProperty = myOptionalStringProperty    self.myForcedUnwrappedOptionalStringProperty = myForcedUnwrappedOptionalStringProperty}

No, there is no such feature for classes. But, if you design this as a struct, you get an memberwise initializer for free — assuming you don't define others initializers yourself.

For instance:

struct Point {    var x: Float    var y: Float}...var p = Point(x: 1, y: 2)

From The Swift Programming Language book:

Structure types automatically receive a memberwise initializer if they do not define any of their own custom initializers. Unlike a default initializer, the structure receives a memberwise initializer even if it has stored properties that do not have default values.

The memberwise initializer is a shorthand way to initialize the member properties of new structure instances. Initial values for the properties of the new instance can be passed to the memberwise initializer by name.