Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions>Ruby

20 interview questions on Rubyfor developers (2026)

Test your technical skills before an interview of Ruby with 20 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
3868
To review
4
20 questions
Expert
2 votes342 runs0 comment

What is the output of the following code? class Person attr_accessor :name end person = Person.new person.name = 'John' puts person.name

Back-end developer
ruby
attr_accessor
Hivebriteat Nov 29, 2021
Easy
1 vote342 runs0 comment

What is the output of the following Ruby code? `numbers = [1, 2, 3, 4, 5]` `numbers.each { |n| puts n }` `numbers.map { |n| puts n }`

Back-end developer
array
map
Hivebriteat Nov 29, 2021
Easy
1 vote326 runs0 comment

How to add a key-value pair to a hash in Ruby

Back-end developer
hash
ruby
Hivebriteat Nov 29, 2021
Hard
1 vote308 runs0 comment

How to change the value of a string in Ruby

Back-end developer
strings
errors
Hivebriteat Nov 29, 2021
Hard
1 vote305 runs0 comment

What is the output of the following code? class A def method1 puts 'method1' end private def method3 puts 'method3' end end obj = A.new obj.method1 obj.method3

Back-end developer
ruby
methods
Hivebriteat Nov 29, 2021
Medium
0 vote333 runs0 comment

Which of the following Ruby code blocks will print 1, 2, 3?

Back-end developer
loops
arrays
Hivebriteat Nov 29, 2021
Easy
0 vote333 runs0 comment

Write a Ruby program that prints the sum of two numbers

Back-end developer
variables
assignment
Hivebriteat Nov 29, 2021
Easy
0 vote325 runs0 comment

Add the string 'toto' to an array in Ruby

Back-end developer
array
ruby
Hivebriteat Nov 29, 2021
Medium
0 vote321 runs
1 comment

What is the difference between include, extend and prepend in Ruby?

Back-end developer
modules
classes
Hivebriteat Nov 29, 2021
Hard
0 vote320 runs0 comment

Return the instance methods common to String, Integer and Array, returns an array

Back-end developer
methods
array
Hivebriteat Mar 3, 2023
Easy
0 vote317 runs0 comment

How to get the first 3 elements of an array in Ruby

Back-end developer
array
range
Hivebriteat Nov 29, 2021
Hard
0 vote312 runs
2 comments

Call a method only if the caller is not null.,Does the same thing as `@my_object.try!(:my_method)`.

Back-end developer
ruby
method
Hivebriteat Nov 29, 2021
Medium
0 vote310 runs0 comment

How to create a block in Ruby

Back-end developer
block
lambda
Hivebriteat Nov 29, 2021
Expert
0 vote310 runs
1 comment

Define a class foobar that inherits from Array and has a method foo.

Back-end developer
classes
inheritance
Hivebriteat Nov 29, 2021
Hard
0 vote308 runs0 comment

How to use blocks in Ruby

Back-end developer
blocks
Hivebriteat Jan 20, 2023
Medium
0 vote308 runs0 comment

A Ruby library that makes it easy to write concurrent code without having to worry about thread safety.

Back-end developer
ruby
parallelism
Hivebriteat Nov 29, 2021
Hard
0 vote306 runs0 comment

The `super` keyword calls the superclass method with the same parameters. If the superclass method cannot raise exceptions, `super` will not raise them either.

Back-end developer
exceptions
super
Hivebriteat Jan 16, 2023
Medium
0 vote305 runs0 comment

Which Ruby libraries are used for background processing?

Back-end developer
queues
background jobs
Hivebriteat Nov 29, 2021
Easy
0 vote305 runs0 comment

How to add a gem to a Ruby project?

Back-end developer
gemfile
ruby
Hivebriteat Nov 29, 2021
Easy
0 vote304 runs0 comment

Write a test for a Ruby method that returns a string

Back-end developer
testing
rspec
Hivebriteat Nov 29, 2021
Ruby tests