Kotlin Basics

Kotlin Basics - Important Points

A. A class is a blueprint for creating objects, while an object is a singleton instance of a class.

B. A class is a singleton instance of an object, while an object is a blueprint for creating classes.

C. There is no difference between a class and an object in Kotlin.

D. A class and an object are both used to create instances of a class.

A. class MyClass {}

B. interface MyInterface {}

C. class MySubclass : MyClass {}

D. All of the above

A. A primary constructor is called before any secondary constructors, while a secondary constructor is called before the primary constructor.

B. A primary constructor is defined inside the class definition, while a secondary constructor is defined outside the class definition.

C. A primary constructor takes parameters that are used to initialize properties, while a secondary constructor can have additional logic or functionality.

D. There is no difference between a primary and a secondary constructor in Kotlin.

A. A range is a collection of values between two endpoints, while an array is a fixed-size collection of elements.

B. A range is a fixed-size collection of elements, while an array is a variable-size collection of elements.

C. There is no difference between a range and an array in Kotlin.

D. A range and an array are both used to store collections of values.

A. Higher-order functions take other functions as parameters or return functions as results.

B. Higher-order functions are only used for mathematical calculations.

C. Higher-order functions are not supported in Kotlin.

D. Higher-order functions are used to create singleton objects.