Class Designated Initializers

fixing errors with default values

when we create a instance of class, no property can be left in a undetermined state.
for example following code snippet gives a error saying class samith has no initializer.

class samith {

var color : String

var age : Int

var hair : String?

var gf = "Saku"

}

in here there are two properties that not determine.
first one is color and the second one is age.
hair variable is a optional and gf variable has a value.
this error can be mitigate by creating a initializer for properties that do not have a default value or optional

what is an intializer?

its an object that runs every time when you creating a new instance of object.
primary role of the initializer is to ensure that all stored properties will be assigned a value when instance is created.

Create an Initializor for those properties that do not have a default value, or which are optional.

more initializer concepts.