Python doesn’t have the concept of private methods or attributes. It’s all about how you implement your class. But you can use pseudo-private variables (name mangling); any variable preceded by __(two underscores) becomes a pseudo-private variable. From the documentation: Since there is a valid use-case for class-private members (namely to avoid name clashes of names … Read more
Use :: instead of . MyObject o = MyMath::calcSomething(); When you are calling the method without the object of the class you should use :: notation. You may also call static method via class objects or pointers to them, in this case you should use usual . or -> notation: MyObject obj; MyObject* p = … Read more
Maybe a bit of example code will help: Notice the difference in the call signatures of foo, class_foo and static_foo: class A(object): def foo(self, x): print(f”executing foo({self}, {x})”) @classmethod def class_foo(cls, x): print(f”executing class_foo({cls}, {x})”) @staticmethod def static_foo(x): print(f”executing static_foo({x})”) a = A() Below is the usual way an object instance calls a method. The … Read more
Cristian’s answer is good, but if you want to be able to access your shared preferences from everywhere the right way would be: Create a subclass of Application, e.g. public class MyApp extends Application {… Set the android:name attribute of your <application> tag in the AndroidManifest.xml to point to your new class, e.g. android:name=”MyApp” (so … Read more
Yes, you use instance methods. Static methods basically say, “There is one way to accomplish this functionality – it’s not polymorphic.” Mocking relies on polymorphism. Now, if your static methods logically don’t care about what implementation you’re using, they might be able to take the interfaces as parameters, or perhaps work without interacting with state … Read more
Two of the greatest evils you will ever encounter in large-scale Java applications are Static methods, except those that are pure functions* Mutable static fields These ruin the modularity, extensibility and testability of your code to a degree that I realize I cannot possibly hope to convince you of in this limited time and space. … Read more
You can review Apple’s Documentation (subsection Method Requirements). There says: As with type property requirements, you always prefix type method requirements with the static keyword when they are defined in a protocol. This is true even though type method requirements are prefixed with the class or static keyword when implemented by a class In practice, … Read more
A static member function has the same access rights as a non static member function. So yes, it can access any public, protected, and private variable in the class. However you need to pass an instance of the class to the function for the function to be able to access the member. Otherwise a static … Read more
but in typescript this.constructor.prop causes error “TS2339: Property ‘prop’ does not exist on type ‘Function’”. Typescript does not infer the type of constructor to be anything beyond Function (after all … the constructor might be a sub class). So use an assertion: class SomeClass { static prop = 123; method() { (this.constructor as typeof SomeClass).prop; … Read more
They will persist for the duration of AppDomain. Changes done to static variable are visible across methods. MSDN: If a local variable is declared with the Static keyword, its lifetime is longer than the execution time of the procedure in which it is declared. If the procedure is inside a module, the static variable survives … Read more