Anonymous Quiz
4%
[1, 2, 3]
84%
[2, 4, 6]
2%
nil
10%
Runtime error
👎4🤔2
Which method is used to create a new instance of a class in Ruby?
Anonymous Quiz
87%
new
2%
create
11%
initialize
0%
start
What does the following code do?
hash = { a: 1, b: 2, c: 3 }
hash.each_key { |key| puts key }
hash = { a: 1, b: 2, c: 3 }
hash.each_key { |key| puts key }
Anonymous Quiz
3%
Prints only the values of the hash
92%
Prints only the keys of the hash
3%
Prints both keys and values of the hash
2%
Runtime error
Which of the following methods adds an element to the end of an array?
Anonymous Quiz
8%
add
71%
push
4%
insert
17%
append
👎1
Which of the following methods converts a string to a number?
Anonymous Quiz
5%
to_integer
4%
to_num
90%
to_i
1%
parse
What does the super keyword do in Ruby?
Anonymous Quiz
0%
Defines a new method for the class
4%
Passes control to another block
7%
Creates a superclass
89%
Calls the parent class's method with the same arguments
Which design pattern is typically used to construct objects with complex creation logic?
Anonymous Quiz
2%
Observer
8%
Singleton
47%
Builder
42%
Factory
What is the name of the architectural style that separates responsibilities into models, views, and controllers?
Anonymous Quiz
1%
REST
11%
MVP (Model-View-Presenter)
1%
MVVM (Model-View-ViewModel)
87%
MVC (Model-View-Controller)
Which of the following methods violates data encapsulation?
Anonymous Quiz
26%
Using getters and setters
17%
Using private methods
56%
Directly accessing instance variables from external code
2%
Using protected methods