Revest Technologies Interview Questions and Answers

A class is a blueprint for creating objects that have properties and methods. A structure is a lightweight version of a class.

• Classes and structures are used to define the properties and behavior of objects in object-oriented programming.

• Classes can be inherited, while structures cannot.

• Classes are reference types, while structures are value types.

• Classes have a deinitializer, while structures do not.

• Examples: Class -

Protocols are a set of rules or guidelines that define a blueprint of methods, properties, and other requirements.

• Protocols are used to define a contract that classes or structs can adopt and conform to.

• They specify a list of methods and properties that must be implemented by conforming types.

• Protocols can be used to achieve polymorphism and code reuse.

• They can be adopted by multiple classes or structs, allowing them t...read more

High order functions are functions that can take other functions as arguments or return functions as results.

• High order functions can be used to create more flexible and reusable code.

• They allow for the composition of functions, making it easier to combine multiple operations.

• Examples of high order functions in iOS development include map, filter, and reduce.