Classes, structures and enumerations once declared in Swift are initialized for preparing
instance of a class. Initial value is initialized for stored property and also for new instances
too the values are initialized to proceed further. The keyword to create initialization
function is carried out by 'init()' method. Swift initializer differs from Objective-C that it
does not return any values. Its function is to check for initialization of newly created
instances before its processing. Swift also provides 'deinitialization' process for performing
memory management operations once the instances are deallocated.
Initializer Role for Stored Properties..................................................................................................
Stored property have to initialize the instances for its classes and structures before
processing the instances. Stored properties use initializer to assign and initialize values
thereby eradicating the need to call property observers. Initializer is used in stored
property
To create an initial value. To assign default property value within the property definition. To initialize an instance for a particular data type 'init()' is used. No arguments
are passed inside the init() function.Syntax
init()
{
//New Instance initialization goes here
}Example
struct rectangle {
var length: Double
var breadth: Double
init() {
length = 6
breadth = 12
}
}
var area = rectangle()