Advanced Topics In Ruby — Part 1 MCQs with Explanations

Writing code that modifies its own structure is the correct answer to “What is metaprogramming in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Reflection is the correct answer to “Which Ruby module provides reflection capabilities for classes, modules, and objects”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Handling undefined method calls is the correct answer to “What is the purpose of the method_missing method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

A class that is used to define methods for a single object is the correct answer to “What is a singleton class in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

The practice of allowing objects of different types to respond to the same method call is the correct answer to “What does the term "duck typing" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

define_method is the correct answer to “Which Ruby method is commonly used for dynamically defining new methods on an object”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

An object that encapsulates a block of code along with its surrounding context is the correct answer to “What is a closure in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Caching the return value of a method for future invocations is the correct answer to “What is memoization in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Evaluating a block of code within the context of a specific object is the correct answer to “What is the purpose of the instance_eval method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Modifying or extending existing classes or modules at runtime is the correct answer to “What does the term "monkey patching" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

module is the correct answer to “Which keyword is used to define a module in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Checking if a method is defined within a module is the correct answer to “What is the purpose of the method_defined? method in Ruby's Module class”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

A hidden class that stores singleton methods for an object is the correct answer to “What is an eigenclass in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

To mix in module methods as instance methods of a class is the correct answer to “What is the purpose of the include keyword in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

The scope determined by where variables and methods are defined in the source code is the correct answer to “What does the term "lexical scope" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Lambdas enforce strict argument checking, while Procs do not is the correct answer to “What is the main difference between a lambda and a Proc in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Proc is the correct answer to “What is an anonymous function in Ruby called”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

The process of breaking down a function that takes multiple arguments into a series of functions that take a single argument each is the correct answer to “What does the term "currying" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Memoist is the correct answer to “Which Ruby module is commonly used for memoization”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Allows objects to handle method calls for undefined methods is the correct answer to “What does the respond_to_missing? method do in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

The name of the current file being executed is the correct answer to “What does the __FILE__ constant represent in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

To handle method calls for undefined methods dynamically is the correct answer to “What is the purpose of using the method_missing method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

to_proc is the correct answer to “Which Ruby method is commonly used for converting a block to a Proc object”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

To set a callback that is triggered whenever a global variable is accessed or modified is the correct answer to “What is the purpose of the trace_var method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Invoking multiple methods on the same object in a single line of code is the correct answer to “What does the term "method chaining" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

To capture the current execution context and create a binding object is the correct answer to “What is the purpose of the binding method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

define_method is the correct answer to “Which method is commonly used for dynamically defining attribute accessors in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Returns the absolute path of the directory containing the currently executing file is the correct answer to “What is the purpose of the __dir__ method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

instance_eval evaluates code within the context of an object, while class_eval evaluates code within the context of a class is the correct answer to “What is the main difference between instance_eval and class_eval in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Adds a module to the inheritance chain before the class itself is the correct answer to “What is the purpose of the prepend method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Prevents further modifications to the object's state is the correct answer to “In Ruby, what does it mean to "freeze" an object”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

It serves as the root of the Ruby class hierarchy is the correct answer to “What is the purpose of the BasicObject class in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

to_s is the correct answer to “Which method is commonly used to convert an object into its string representation in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

It allows you to perform operations on an object and return the object itself is the correct answer to “What is the purpose of the Object#tap method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Delaying the execution of a computation until the result is needed is the correct answer to “What does the term "lazy evaluation" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

It combines all elements of a collection into a single value using a binary operation is the correct answer to “What is the purpose of the Enumerable#reduce method in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

It checks if a collection includes a specific element is the correct answer to “What is the significance of using the include? method in Ruby's Enumerable module”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

to_a is the correct answer to “Which method is used to convert a hash into an array of key-value pairs in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

Caching the return value of a method for future invocations is the correct answer to “What does the term "memoization" refer to in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.

It allows you to create custom iterators for any enumerable object is the correct answer to “What is the purpose of the Enumerator class in Ruby”. This question is standard in competitive examination syllabi for Advanced Topics In Ruby.