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60 interview questionsfor developers (2024)

Test your developer skills before an interview with 60 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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60 questions
Expert
0 vote59 runs0 comment

Can we call foo on bar?

Back-end developer
ruby
singleton_method
Olivier Millaat Nov 16, 2021
Easy
0 vote58 runs0 comment

What is the output of the following Ruby code? `1..5.to_a`

Back-end developer
range
Olivier Millaat Nov 16, 2021
Expert
0 vote45 runs0 comment

Convert a string to uppercase in Ruby

Back-end developer
strings
methods
Olivier Millaat Nov 2, 2021
Expert
0 vote44 runs0 comment

How to add a title attribute to a div in Ruby

Back-end developer
attr_accessor
ruby
Olivier Millaat Nov 29, 2021
Hard
0 vote42 runs0 comment

How to get all private methods of a class in Ruby

Back-end developer
ruby
methods
Olivier Millaat Nov 2, 2021
Expert
0 vote31 runs0 comment

What is the name of the class that is used to make HTTP requests in Ruby?

Back-end developer
http
net
Olivier Millaat Nov 16, 2021
Expert
0 vote27 runs0 comment

What is the output of the following Ruby code? `puts 'Hello World'`

Back-end developer
ruby
exceptions
Olivier Millaat Nov 2, 2021
Medium
0 vote26 runs0 comment

How to use mixins in Ruby

Back-end developer
ruby
mixins
Olivier Millaat Nov 2, 2021
Hard
0 vote25 runs0 comment

Ruby method overriding

Back-end developer
ruby
method
Olivier Millaat Nov 16, 2021
Hard
0 vote24 runs0 comment

Write a Java program that prints the first 100 prime numbers.

Back-end developer
undefined
java
Olivier Millaat Nov 29, 2021
Medium
0 vote23 runs0 comment

Ruby code to create a class with a method that returns the value of a variable.

Back-end developer
ruby
hash
Olivier Millaat Nov 2, 2021
Hard
0 vote22 runs0 comment

Create a custom exception class in Ruby

Back-end developer
exceptions
classes
Olivier Millaat Nov 16, 2021
Easy
0 vote22 runs0 comment

How to declare a variable in Ruby

Back-end developer
variables
ruby
Olivier Millaat Nov 2, 2021
Medium
0 vote22 runs0 comment

Write a Ruby program that prints the first 100 prime numbers.

Back-end developer
ruby
undefined
Olivier Millaat Nov 2, 2021
Medium
0 vote21 runs0 comment

Assign the first element of the array to a, the last element to b, and the rest to an array of _.

Back-end developer
arrays
tuples
Olivier Millaat Mar 24, 2023
Medium
0 vote21 runs0 comment

Ruby does not support multiple inheritance.

Back-end developer
inheritance
Olivier Millaat Nov 16, 2021
Expert
0 vote21 runs0 comment

Write a Ruby program that prints the first 100 prime numbers.

Back-end developer
ruby
undefined
Olivier Millaat Nov 2, 2021
Expert
0 vote21 runs0 comment

Install the latest version of Ruby

Back-end developer
ruby
version
Olivier Millaat Nov 2, 2021
Expert
0 vote21 runs0 comment

Write a Ruby program that prints 'Hello World' to the console.

Back-end developer
strings
arrays
Olivier Millaat Nov 2, 2021
Medium
0 vote21 runs0 comment

Ruby: f.instance_variable_get '@some_method' returns nil

Back-end developer
ruby
instance_variable_get
Olivier Millaat Nov 2, 2021