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1.What is the outcome of the code snippet?

class MyClass
  define_singleton_method(:singleton_method) do
    puts "This is a singleton method."
  end
end

MyClass.singleton_method

Prints "This is a singleton method."

Raises an error

Defines a new instance method

Creates a new class

2.What is the purpose of the `define_singleton_method` in Ruby metaprogramming?

Define a method on a specific object

Define a method on a class

Define a method on a module

Define a method on an instance variable

3.In Ruby, what does the `singleton_class` method provide access to?

The superclass of a class

The metaclass of an object

The instance variables of an object

The constants of a class

4.How can you create a class method in Ruby using `class_eval`?

Inside the class definition, call `class_eval` with the method name and a block

Use `class_method` keyword

Call `class_eval` outside the class definition

Invoke `class_eval` on an instance of the class

5.How can you dynamically define private methods in Ruby?

Using the `private` keyword

Using `define_private_method` method

Using `private_method` keyword

Using `class_eval` method

6.What is a common use case for the `instance_variable_get` method in Ruby metaprogramming?

Define new instance variables

Set the value of an instance variable

Retrieve the value of an instance variable by name

Access class constants

7.In Ruby metaprogramming, what does the `send` method with three arguments allow you to do?

Modify class constants

Access instance variables

Define new classes

Invoke a method dynamically with specified arguments

8.What is the purpose of the `extend` method in Ruby metaprogramming?

Remove a module from the inheritance chain

Add a module to the inheritance chain before the class

Add a module's methods as instance methods

Create a new instance of a module

9.How can you dynamically define class constants in Ruby within a module?

Using `module ConstantName`

Using `define_constant` method

Using `const_set` method

Using `Module.define_constant`

10.What is the purpose of the `class_eval` method in Ruby metaprogramming?

Evaluate code in the context of a class

Access class constants

Define instance variables

Create new instances of a class

11.How can you dynamically define class constants in Ruby within a module?

Using `module ConstantName`

Using `define_constant` method

Using `const_set` method

Using `Module.define_constant`

12.What is a potential misuse of metaprogramming in Ruby?

Creating code that is overly complex and hard to understand

Optimizing code for performance

Using metaprogramming in everyday programming

Avoiding repetitions in code

13.When is the `method_missing` method invoked in Ruby metaprogramming?

When a method is called that hasn't been defined

When a method is called with incorrect arguments

When a method is defined multiple times

When a method is called with a block

14.How can you dynamically create singleton methods in Ruby?

Using `instance_eval`

Using `define_method`

Using `class_eval`

Using `define_singleton_method`

15.What is the role of `method_missing` in metaprogramming?

Deletes existing methods

Handles calls to undefined methods

Defines new methods

Accesses class variables directly

16.How does `define_method` contribute to the DRY principle in Ruby metaprogramming?

It automatically defines methods with default implementations

It enforces the use of class methods

It removes the need for method definition

It allows for dynamic method creation, reducing code repetition

17.What is a potential misuse of metaprogramming in Ruby?