Inheritance And Polymorphism In Ruby - Practice Test

(A) To define constructor methods for class attributes

(B) To define only a writer method for class attributes

(C) To define both reader and writer methods for class attributes

(D) To define only a reader method for class attributes

(C) To define both reader and writer methods for class attributes

(A) attr_reader defines both reader and writer methods, attr_writer defines only reader methods, and attr_accessor defines only writer methods

(B) attr_reader defines both reader and writer methods, attr_writer defines only writer methods, and attr_accessor defines only reader methods

(C) attr_reader defines only writer methods, attr_writer defines both reader and writer methods, and attr_accessor defines only reader methods

(D) attr_reader defines only reader methods, attr_writer defines only writer methods, and attr_accessor defines both

(D) attr_reader defines only reader methods, attr_writer defines only writer methods, and attr_accessor defines both

(A) Modularity and reusability

(B) Improved performance

(C) Simplicity and ease of use

(D) Reduced memory usage

(A) Modularity and reusability

(A) To create a new instance

(B) To define a new method

(C) To inherit from another class

(D) To mix in methods from a module into a class

(D) To mix in methods from a module into a class

(A) A method in a class

(B) A variable in a class

(C) An instance of a class

(D) A module in a class

(C) An instance of a class

Inheritance And Polymorphism In Ruby - Study Mode