Lazy properties are properties whose initial value isn't computed until the first time they are used. Including the lazy modifier/keyword before the declaration of a stored property indicates it is lazy. This lets you delay the initialization of stored properties. This could be a great way to streamline your code and reduce unnecessary work. When a code is expensive and unlikely to be called consistently, a lazy variable can be a great solution.
Example :
class Person {
var name: String
lazy var personalizdgreeting : String = {
return “HelloScala \(self.name)!”
}()
init(name: String) {
self.name = name
}
}
As shown above, we aren't sure what value personalizedgreeting should have. To know the correct greeting for this person, we need to wait until this object is initialized.
