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I would like to know if you can create static classes in swift similar to those in C# i.e. a class that cannot be instantiated which can only have static functions and static properties. Are these types of classes possible in swift?
If not, what is the most efficient way to recreate such a design pattern given the tools available within Swift?
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Swift allows us to use a static prefix on methods and properties to associate them with the type that they're declared on rather than the instance. We can also use static properties to create singletons of our objects which, as you have probably heard before is a huge anti-pattern.
The Static keyword makes it easier to utilize an objects properties or methods without the need of managing instances. Use of the Static keyword in the Singleton pattern can reduce memory leaks by mismanaging instances of classes.
Class functions are dynamically dispatched and can be overridden by subclasses. Static functions are invoked by a class, rather than an instance of a class. These cannot be overridden by a subclass.
A static method is of class type (associated with class rather than object), so we are able to access them using class names. Note: Similarly, we can also create static methods inside a struct. static methods inside a struct are of struct type, so we use the struct name to access them.
No, Swift has no concept of a static class. But if you have no assignable property anyway, what difference will initialization make? I can think of 2 options:
Mark the class as final so it cannot be inherited: final class MyClass { .... }
Use a struct, which has no inheritance: struct MyUtilities { ... }
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