Just add to your FacebookLoginStrategy: public init() {} As long as you do not implement init() explicitly, it is marked as internal by default. You need to overwrite that permission level to be able to instantiate from outside your framework.
Here are all access modifiers in Venn diagrams, from more limiting to more promiscuous: private: private protected: – added in C# 7.2 internal: protected: protected internal: public:
Use a single underscore prefix: class _Internal: … This is the official Python convention for ‘internal’ symbols; “from module import *” does not import underscore-prefixed objects. Reference to the single underscore convention.
The primary reason is that export matches the plans for ECMAScript. You could argue that “they should have used “export” instead of “public”, but asides from “export/private/protected” being a poorly matched set of access modifiers, I believe there is a subtle difference between the two that explains this. In TypeScript, marking a class member as … Read more
From Java documentation If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes — you will learn about them in a later lesson.) At the member level, you can also use the public modifier or no modifier (package-private) … Read more
Everything in a class is public if not specified. Everything in a module is private unless export keyword is used.
Removal of the access modifier Java did originally have the private protected modifier, but it was removed in JDK 1.0.2 (the first stable version, the Java 1.0 we know today). A few tutorials regarding JDK 1.0.2 (here and here) say the following: Note: The 1.0 release of the Java language supported five access levels: the … Read more
The “protected internal” access modifier is a union of both the “protected” and “internal” modifiers. From MSDN, Access Modifiers (C# Programming Guide): protected: The type or member can be accessed only by code in the same class or struct, or in a class that is derived from that class. internal: The type or member can … Read more
As of Swift 3.0.1, there are 4 levels of access, described below from the highest (least restrictive) to the lowest (most restrictive). 1. open and public Enable an entity to be used outside the defining module (target). You typically use open or public access when specifying the public interface to a framework. However, open access … Read more
I use them if I need to cache a value and want to lazy load it. private string _password; private string Password { get { if (_password == null) { _password = CallExpensiveOperation(); } return _password; } }