Menu
First, initiate a constructor as private. Then create a private static instance of this singleton class. Keep in mind to NOT instantiate it. Then, write a static method, which checks the static instance member for null and initiates the instance.
Private constructors allow us to restrict the instantiation of a class. Simply put, they prevent the creation of class instances in any place other than the class itself. Public and private constructors, used together, allow control over how we wish to instantiate our classes – this is known as constructor delegation.
In Python, there is no existence of Private methods that cannot be accessed except inside a class. However, to define a private method prefix the member name with double underscore “__”. Note: The __init__ method is a constructor and runs as soon as an object of a class is instantiated.
The access specifier of the primary constructor follows the name and type parameters of the type:
type ValidString private (value: string) =
...
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With