What is difference between private and Fileprivate in Swift?
If you mark something fileprivate it can be read anywhere in the same file it was declared – even outside the type. On the other hand, a private property can only be read inside the type that declared it, or inside extensions to that type that were created in the same file.May 28, 2019
What is the difference Fileprivate &private access level?
fileprivate allows use only within the defining source file. private allows use only from the enclosing declaration and since Swift 4, to any extensions of that declaration in the same source file.Nov 6, 2017
What is the use of private in Swift?
Private in Swift 3 Use private access to hide the implementation details of a specific piece of functionality when those details are used only within a single declaration. This means that you can't reach across to a private declaration from another lexical scope.
What is a public function in Swift?
Public — access enables data members to be used within any source file from their defining module, and also in a source file from another module that imports the defining module.Mar 2, 2021
When should I use Fileprivate?
When to use fileprivate Fileprivate access restricts the use of an entity within the same defined source file. The only reason you would use fileprivate is when you want to access your code within the same file from different classes or structs.May 18, 2021
What is the difference between open and public and Fileprivate and private?
Open - same as public, only difference is you can subclass or override outside the module. Fileprivate - As the name say's, data members and member functions are accessible within the same file. Private - This is where you can have access within the scope of function body or class.
What is any and AnyObject in Swift?
Any and AnyObject are two special types in Swift that are used for working with non-specific types. According to Apple's Swift documentation, Any can represent an instance of any type at all, including function types and optional types. AnyObject can represent an instance of any class type.Nov 3, 2016
What is lazy VAR in Swift?
A lazy var is a property whose initial value is not calculated until the first time it's called. It's part of a family of properties in which we have constant properties, computed properties, and mutable properties.Jan 25, 2021
What is polymorphism in Swift?
polymorphism is about provisioning a single interface to entities of different types. Although it is usually underestimated, it is one of the most powerful concepts in software engineering that lets you define different behaviors for different objects while you are still using a shared interface among them.May 18, 2020
What is mutating in Swift?
What can a mutating function do? Essentially, a function that's been marked as mutating can change any property within its enclosing value. The word “value” is really key here, since Swift's concept of structured mutations only applies to value types, not to reference types like classes and actors.Jul 7, 2021
What is Self in Swift?
“self” as an Object in Swift This self is a reference to the current object (“instance”) of a class (or struct), within that class. You can work with self as if it's a variable or object within the class (or struct), that is the class (or struct).Dec 9, 2021
What is static in Swift?
Static variables are those variables whose values are shared among all the instance or object of a class. When we define any variable as static, it gets attached to a class rather than an object. The memory for the static variable will be allocation during the class loading time.Jul 29, 2019