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Swift is a compiled and innovative programming language created by Apple Inc in June 2014 for creating mobile and desktop apps. This programming language is compatible with watchOS, macOS, iOS, and tvOS.
The Swift programming language was built by Apple to interact with both Cocoa Touch and Cocoa. Swift is compatible with a variety of operating systems, including FreeBSD, Linux, Darwin, and others. This language was created to work in conjunction with Apple's Objective-C library and Cocoa framework.
Whether you are a candidate actively looking for Swift interview preparation or a recruiter looking for Swift developers, the following list of Swift interview questions will be of great use for you.
Distinguish Objective C from Swift.
This is a common Swift interview question.
Is there a way to test the iPhone apps without an iPhone?
This is a trick question. If we do not have an iOS device, we can test our application on the Mac system using Apple's simulators.
Name some programs that are required in the development of iOS applications?
This is a common Swift interview question for experienced 2022.
Mention some characteristics of Swift.
This is a popular Swift interview question. The interviewer doesn't want you to turn into a storyteller here. All they want to know is how strong are your basics. You can start with the following points and they will know that you have a strong base.
What is PLIST?
PLIST is an abbreviation for Property List. PLIST is a dictionary of values and keys that can be saved in our file system using the.plist file extension. The property list is used to store fewer data in a portable and lightweight manner. Typically, they are written in XML.
The following are examples of different types of property lists:
What is a protocol?
The protocol is a very common feature of the Swift programming language, and it is a concept similar to a java interface. A protocol is a blueprint of properties, methods, and other criteria that are appropriate for a specific task.
The protocol, in its most basic form, is an interface that describes some methods and properties. Instead of implementation, the protocol is simply described as a skeleton of properties or methods. Enumerations, functions, and classes can be used to implement properties and methods.
What is core data?
Core data is one of Apple's most powerful database frameworks for macOS and iOS apps. In our applications, core data is used to manage the model layer object. We can think of Core Data as a framework for filtering, modifying, saving, and tracking data within iOS apps. We can easily map the objects in our app to the table records in the database using core data without knowing any SQL. The M in the MVC structure stands for core data.
What is a base class?
In Swift, any class that doesn't inherit from any other class is known as a base class. Classes in a Swift programming language are not inherited from the universal base class. The developer defines the classes without specifying the superclass, and it becomes the base class automatically.
What is optional chaining?
Optional chaining is a handy mechanism that we may utilize in conjunction with the option to call the methods, properties, and subscripts on the options, which can be nil or not. We may try to obtain a value from a chain of optional values during this operation.
What is MVC?
The model view controller is abbreviated as MVC. The MVC pattern is a powerful software architectural paradigm for creating apps. MVC is based on the fundamentals of Object-Oriented Programming. It organizes the data and interaction flow in our app. In iOS development, Model-View-Controller is a crucial foundational notion to grasp. The MVC pattern is used by many iOS frameworks, including UIKit and Cocoa Touch, for communications and structured data flow.
The above list of Swift interview questions will be an important part of your Swift interview preparation. These Swift interview questions will assist you in solving similar queries or generating new ones. A Swift interview, on the other hand, would not consist solely of these technical Swift interview questions. A Swift interview may also include questions regarding a person's social and life abilities. This allows the recruiter to determine whether the individual can persevere in difficult situations while also assisting their coworkers. As a recruiter, finding someone who gets along with the rest of the team is critical.
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