10.10 Lazy Stored Properties

There are several different ways in which a property can be initialized, the most basic being direct assignment as follows:

var myProperty = 10

Alternatively, a property may be assigned a value within the initializer:

class MyClass {

  let title: String

 

  init(title: String) {

    self.title = title

  }

}

For more complex requirements, a property may be initialized using a closure:

class MyClass {

    

    var myProperty: String = {

        var result = resourceIntensiveTask()

        result = processData(data: result)

        return result

    }()

.

.

}

Particularly in the case of a complex closure, there is the potential for the initialization to be resource...