Swift Interview Questions

A Swift literal is a direct value of a variable or a constant. It may be a number, character or string. Literals are used to initialize or assign value to variables or constants. Different types of literals are: Binary Literals Octal Literals Hexadecimal Literals Decimal Literals In Swift, there are several types of literals: Integer … Read more

Features of Swift programming language: Swift is very easy to learn and precise to use. It provides a safe programming approach. In Swift programming language, variables and constants must be initialized before use. Automatic memory management. Swift uses “switch” function instead of “if” statement for conditional programming. Swift follows Objective-C like syntax. It checks Arrays … Read more

You have to declare variables and constants before using it. Constants are declared by using let keyword and variables by var keyword. In Swift, you declare variables using the var keyword and constants using the let keyword. Here’s an example of how you would declare a variable and a constant: var myVariable = 10 let … Read more

Swift Dictionary is used to store the key-value pairs and access the value by using the key. It is just like hash tables in other programming languages. In Swift, a dictionary is a collection type that allows you to store key-value pairs. Each value in a dictionary is associated with a unique key, similar to … Read more

Regular Expression: Regular expressions are the special string patterns that specify how to perform a search through a string. Responder Chain: Responder Chain is a hierarchy of objects that obtain the opportunity to respond to the events. In Swift, regular expressions and responder chains serve different purposes: Regular Expressions: Regular expressions (regex) are patterns used … Read more