add a protected static method to a class in swift

To add a protected static method to a class in Swift, you can use the fileprivate access control modifier.

Here's an example:

main.swift
class MyClass {
    // Protected static method
    fileprivate static func protectedMethod() {
        // Code here
    }
}
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7 lines

In Swift, fileprivate access means that the method can be accessed within the same source file, but not outside of it. By making it static, this method can be called without creating an instance of the class.

To call the protected static method from another class in the same source file:

main.swift
class MyOtherClass {
    func foo() {
        MyClass.protectedMethod()
    }
}
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6 lines

Note that if you try to access protectedMethod() from outside the source file, you will get a compilation error.